北 天 门 冬 bei tian men dongAsparagus borealis S. C. Chen; A. dolichorhizomatus J.M. Ni & R. N. Zhao.Herbs dioecious. Rhizomes creeping, stolonlike, 1.2–1.8mm thick., with spaced roots. Stems erect, usually simple, 10–30 cm, striate or striate-ridged. Cladodes in fascicles of 5–7,spreading, falcate, 0.4–2(–3.2) cm × ca. 0.7 mm, subterete,slightly flattened, indistinctly grooved. Leaves scarcely spurred.Inflorescences developing after cladodes. Flowers of both sexespaired; pedicel 3.5–4 mm, articulate distally. Male flowers:perianth pale purple, ca. 7 mm; stamens unequal, outer oneslonger than inner, filaments adnate to perianth segments for ca.3/4 their length. Female flowers: perianth ca. 4 mm; abortedstamens 6. Berry ca. 7 mm in diam., ca. 3-seeded. Fl. May,fr. Aug.Thickets; 2200–2300 m. Qinghai.42. DRACAENA Vandelli ex Linnaeus, Syst. Nat., ed. 12, 2: 229, 246. 1767;Mant. Pl. 1: 9, 63. 1767.Pleomele Salisbury.龙 血 树 属 long xue shu shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Nicholas J. TurlandPlants treelike, shrubby, or subshrubby. Stems simple or branched, ± woody. Leaves crowded toward apex of stems or spacedalong distal part of stems, sessile or petiolate; petiole to 8 cm, base amplexicaul; leaf blade usually sword-shaped to elliptic-lanceolate,veins truly parallel from base, lateral veins absent. Inflorescence terminal, branched, rarely simple. Flowers bisexual, clustered,sometimes solitary; pedicel articulate. Perianth cylindric, campanulate, or funnelform; tube short; lobes 6, similar. Stamens 6, insertedin tube or throat of perianth; anthers versatile. Ovary 3-loculed; ovules 1 or 2 per locule. Style slender; stigma capitate or 3-lobed.Fruit a berry, globose, 1–3-seeded. Seeds not coated with phytomelanin.About 50 species: mainly in tropical regions of Africa and Asia; six species in <strong>China</strong>.Dracaena, as treated in Dracaenaceae by Bos (in Kubitzki, Fam. Gen. Vasc. Pl. 3: 240. 1998), includes the genus Sansevieria Thunberg fromAfrica to S Asia. If this arrangement is accepted, Dracaena probably comprises from 100–150 species. Dracaena in Asia has been studied very littlefor severaldecades. Consequently there are many taxononomic and nomenclatural problems and large numbers of unidentified specimens in herbaria.The present account attempts to identify some of the problems affecting the Chinese species, which can only be properly understood in the context ofan in-depth study on the genus throughout tropical Asia.1a. Plants treelike, 3–15 m tall; leaves crowded toward apex of stems, base completely covering internode; internodesmuch shorter than wide; flowers in clusters of 2–7, perianth 6–8 mm.2a. Branches reddish apically; leaves reddish basally; inflorescence rachis densely papillose-pubescent;filaments reddish brown tuberculate distally ............................................................................................... 1. D. cochinchinensis2b. Branches not reddish apically; leaves not reddish basally; inflorescence rachis glabrous or subglabrous;filaments not tuberculate ................................................................................................................................... 2. D. cambodiana1b. Plants shrubby or subshrubby, to 5 m tall; leaves spaced along distal part of stems, base usually not completelycovering internode; internodes often longer than wide; flowers solitary or in clusters of 2–4, perianth(14–)18–23 mm.3a. Leaves subsessile or indistinctly petiolate, petiole to 1 cm, leaf blade nearly sword-shaped to linearoblanceolate....................................................................................................................................................... 3. D. angustifolia3b. Leaves distinctly petiolate, petiole 1–8 cm, leaf blade linear-lanceolate to elliptic or broadly oblanceolate.4a. Leaf blade linear-lanceolate or narrowly elliptic-lanceolate, 10–15 × 2–3 cm; base of petiole neitherenlarged nor sheathing internode ...................................................................................................................... 4. D. elliptica4b. Leaf blade elliptic-lanceolate, elliptic, or broadly oblanceolate, 20–40 × 6–8 cm; base of petiole enlargedand sheathing internode.5a. Plants shrubby, to 5 m tall; inflorescence branched, 30–60 cm; pedicels 8–10 mm, articulate atmiddle .............................................................................................................................................. 5. D. hokouensis5b. Plants subshrubby, less than 1 m tall; inflorescence simple, ca. 15 cm; pedicels 3–4 mm, articulateabove middle ...................................................................................................................................... 6. D. terniflora1. Dracaena cochinchinensis (Loureiro) S. C. Chen in F. T.Wang & Tang, Fl. Reipubl. Popularis Sin. 14: 276. 1980.剑 叶 龙 血 树 jian ye long xue shuAletris cochinchinensis Loureiro, Fl. Cochinch. 1: 204.1790; Dracaena loureiroi Gagnepain, nom. illeg. (included A.cochinchinensis); Pleomele cochinchinensis (Loureiro) Merrill.Plants treelike, 5–15 m tall. Stems branched, sometimes to1 m thick, reddish apically; internodes much shorter than wide;bark grayish white, becoming grayish brown with age, smooth.Leaves crowded at apex of branches, sessile, sword-shaped, 30–100 × 2–5 cm, leathery, base reddish, completely covering internode.Inflorescence terminal, branched, more than 40 cm;rachis densely papillose-pubescent. Flowers in clusters of 2–5;
pedicel 3–6 mm, articulate distally. Perianth milky white, 6–8mm; tube 1.5–2 mm; lobes 5–6 mm. Filaments flat, 0.5–0.7 mmwide, reddish brown tuberculate distally. Berry orange, subglobose,0.8–1.2 cm in diam., 1–3-seeded. Fl. Mar, fr. Jul–Aug.Limestone slopes; 900–1700 m. SW Guangxi, S Yunnan [Cambodia,Vietnam].There is a nomenclatural problem with the treelike Chinese plantsknown under this name. The neotype specimen of Aletris cochinchinensis(J. & M. S. Clemens 4048, designated by Bos in Agric. Univ.Wageningen Papers 84: 121. 1984) was said to be at P with duplicates atBM, K, and MO, but, after searching each herbarium, only the sheet atBM could be found. This appears to be a specimen of the shrubbyspecies traditionally known as Dracaena angustifolia, which shouldtherefore take the name D. cochinchinensis, leaving the treelike Chineseplants possibly without a name unless they are conspecific with D.cambodiana, which is very similar morphologically (see below). Thespecimen does not conflict with Loureiro’s protologue. Rejection of thename A. cochinchinensis would maintain the traditional and currentapplication of D. angustifolia. Alternatively, conservation of A. cochinchinensiswith a conserved type could additionally preserve its usage inthe sense of the treelike Chinese plants.The dried resin, called xue jie ( 血 竭 ) or dragon’s blood, is usedmedicinally. The collection of this resin, together with habitat destruction,hasmade Dracaena cochinchinensis a vulnerablespecies in <strong>China</strong>.2. Dracaena cambodiana Pierre ex Gagnepain, Bull. Soc. Bot.France 81: 286. 1934.柬 埔 寨 龙 血 树 jian pu zhai long xue shuPleomele cambodiana (Pierre ex Gagnepain) Merrill &Chun.Plants treelike, 3–4(–10) m tall. Stems usually branched,not reddish apically; internodes much shorter than wide; barkgrayish brown. Leaves crowded at apex of branches, sessile,sword-shaped, 60–70 × 1.5–3 cm, leathery, base not reddish,completely covering internode. Inflorescence terminal, branched,30–40 cm; rachis glabrous or subglabrous. Flowers in clustersof 3–7; pedicel 5–7 mm, articulate distally. Perianth greenishwhite or pale yellow, 6–7 mm; tube 1.2–1.6 mm; lobes 4.5–5 mm. Filaments flat, ca. 0.5 mm wide, not tuberculate. Styleslightly shorter than ovary. Berry ca. 1 cm in diam. Fl. Jul.Forests, dry and sandy soils; near sea level to 300 m. S Hainan[Cambodia, Laos, Thailand, Vietnam].Dracaena cambodiana is very similar morphologically to thespecies here named D. cochinchinensis, and J. J. Bos (pers. comm.)notes that the two may be conspecific.The dried resin can be used medicinally as a substitute for that ofDracaena cochinchinensis.3. Dracaena angustifolia Roxburgh, Fl. Ind., ed. 1832, 2: 155.1832.长 花 龙 血 树 chang hua long xue shuPleomele angustifolia (Roxburgh) N. E. Brown.Plants shrubby, rhizomatous, 1–3 m tall. Stems simple orfew branched; internodes often longer than wide; bark grayish,smooth. Leaves spaced along distal part of stems, subsessile orindistinctly petiolate; petiole to 1 cm, base not completelycovering internode; leaf blade nearly sword-shaped to linearoblanceolate,20–45 × 1.5–5.5 cm. Inflorescence terminal,branched, 30–50 cm; rachis glabrous. Flowers in clusters of 2or 3; pedicel 7–8 mm, articulate distally or near apex. Perianthgreenish white, 1.9–2.3 cm; tube 7–8 mm; lobes 1.1–1.6 cm.Filaments filiform; anthers 2–3 mm. Style 5–8 × as long asovary. Berry orange, globose, 0.8–1.2 cm in diam., 1- or 2-seeded. Fl. Mar–May, fr. Jun–Aug. 2n = 40.Forests, thickets. Hainan, S Taiwan (including Lan Yu), S Yunnan[Bhutan, Cambodia, India (including Andaman Islands), Indonesia,Laos, Malaysia, Myanmar, Papua New Guinea, Philippines, Thailand,Vietnam; N Australia].Dracaena menglaensis G. Z. Ye (in G. Z. Ye et al., Acta Bot. Yunnan.14: 30. 1992) was described from two collections from the samelocality in S Yunnan (Mengla Xian). It is said to differ from D. angustifoliain its longer, sword-shaped leaves with bases completely coveringinternodes, perianth lobes tinged reddish purple distally, and 3-ribbedberry with 4 small, apical projections. However, in all other features, itfalls within the range of variation of D. angustifolia, and is probablybest regarded as a robust plant of that species.4. Dracaena elliptica Thunberg, Dracaena, 6. 1808.细 枝 龙 血 树 xi zhi long xue shuDracaena atropurpurea Roxburgh var. gracilis (Baker)Baker; D. elliptica var. gracilis Baker; D. gracilis (Baker) J. D.Hooker (1892), not Salisbury (1796, nom. illeg., included D.marginata Lamarck).Plants shrubby, 1–5 m tall. Stems branched; internodeslonger than wide. Leaves spaced along distal part of branches,distinctly petiolate; petiole ca. 1 cm, base neither enlarged norcovering internode; leaf blade linear-lanceolate or narrowlyelliptic-lanceolate, 10–15 × 2–3 cm, midvein distinct. Inflorescenceterminal, branched, 7–10 cm; rachis glabrous. Flowerssolitary, rarely paired; pedicel ca. 10 mm, articulate above middle.Perianth greenish, sometimes flushed red or purple, 2–2.3cm.S Guangxi [Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].Chinese plants were treated in FRPS as Dracaena gracilis, whichis an illegitimate name (a later homonym). J. J. Bos (pers. comm.) notesthat the type specimen of D. elliptica var. gracilis, from Penang, Malaysia,differs from typical D. elliptica only in having somewhat narrowerleaves. He believes that the plant should be treated under D.elliptica, but does not support any infraspecific status for it.5. Dracaena hokouensis G. Z. Ye in G. Z. Ye et al., Acta Bot.Yunnan. 14: 29. 1992.河 口 龙 血 树 he kou long xue shuPlants shrubby, to 5 m tall. Stem simple; internodes oftenlonger than wide. Leaves spaced along distal part of stem, distinctlypetiolate; petiole 4–8 cm, base neither enlarged nor coveringinternode; leaf blade elliptic-lanceolate or broadly oblanceolate,25–40 × 6–7 cm, midvein distinct. Inflorescence terminal,branched, 30–60 cm; rachis glabrous. Flowers in clusters of2–4; pedicel 8–10 mm, articulate at middle. Perianth white, 1.8–2 cm; tube ca. 8 mm; lobes 1–1.2 cm. Filaments filiform; anthersca. 2 mm. Style filiform, much longer than ovary. Berryorange, globose, 1.5–2 cm in diam., 3-furrowed. Fl. Apr–May,
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34b. Stem very short; leaves basal
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simple, erect, usually with a few s
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ciflorus and S. spicatus Klotzsch);
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pendulous .........................
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ase, persistent. Stamens 6, free or
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Helonias umbellata (Baker) N. Tanak
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6-11 cm, adaxially sometimes with p
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小 重 楼 xiao chong louPlants 7-
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14b. Paris thibetica var. apetala H
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slightly convex connective apically
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when dried, not wrinkled adaxially
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80b. Flowers much smaller, tepals 2
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8. Smilax davidiana A. de Candolle
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present. Leaf blade abaxially sligh
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This species was misidentified in F
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slightly shorter than petiole; umbe
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马 甲 菝 葜 ma jia ba qiaVines
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Vines climbing, usually unarmed. St
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70. Smilax bauhinioides Kunth, Enum
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4a. Male umbel 5-9-flowered; filame
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persistent tepals. Seeds many, glob
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Imag. Descr. Fl. Russ. 8. 1844; Gag
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ca. 2/3 as wide as inner ones.6a. I
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1a. Bracts 2-4, much smaller than l
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oblong to lanceolate, 2-2.5 cm × 6
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12b. Leaves 0.5-1 cm wide; inflores
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Yunnan.The bulbs are used medicinal
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甘 肃 贝 母 gan su bei muFritil
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ather long, slender; stigma 3-lobed
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2b. Flowers not campanulate, tepals
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etween apical whorl and basal bract
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Lilium nanum Klotzsch var. brevisty
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2.5-3 cm × 5-10 mm. Stem 20-30 cm,
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5.5-6 cm × 8-10 mm, margin revolut
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woolly hairs ......................
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3-5-veined, margin papillose. Flowe
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3a. Inner tepals neither spotted no
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3a. Stems subglabrous.4a. Flowers p
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Tepals obliquely outward spreading,
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12a. Tepals white to cream, spotted
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latipetalum Collett & Hemsley; D. p
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only slightly exserted from periant
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laysia, Myanmar, Nepal, Philippines
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3b. Perianth tube longer, to 4 cm,r
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- Page 120 and 121: 昆 仑 韭 kun lun jiuBulbs cluste
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- Page 126 and 127: 112. Allium songpanicum J. M. Xu in
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- Page 142 and 143: Asparagus soongoricus Iljin.Herbs d
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- Page 148 and 149: Tovaria oleracea Baker, J. Linn. So
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