Revisional study of neotropical Beilschmiedia species (Lauraceae ...

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This grouping is more or less supported by the mesh pattern and the tertiary vein pattern. In group 2 all the species share open meshes and reticulate tertiaries. In group 1 many species have closed meshes, but some species are exceptions. The exceptional species which have open meshes are B . costaricensis, B. hexanthera, and B. pendula. Some species of the group 1 are distinguished from others by the strongly percurrent tertiary veins. The other species have weakly percurrent or reticulate tertiary veins, and some of these have both types of the tertiary veins within a species. Since the mesh patterns and tertiary vein patterns have no correspondence among the species of group 1, relationships within group 1 species can not be determined only with the venation pattern. 2) cuticular characters The characters observed in cuticles here are mostly regarded as informative characters by Christophel et. al. (1996). The character which should be used carefully is size of the epidermal cells. Roth (1984) reported that size of the epidermal cells tend to be larger in xeric habitat. Therefore dimension of the epidermal cells might be affected by the environmental change. Instead, variation of the cell size between adaxial and abaxial surfaces is preferred for the systematic use. In the overall similarity of the cuticular characters, neotropical Beilschmiedia species are divided into five groups as following; Group 1: Beilschmiedia alloiophylla, B. costaricensis, B. hexanthera, B. immersinervis, B. latifolia, B. mexicana, B . obovatifolia, B. ovalioides, B. ova/is, B. pendula, B. riparia, B. steyermarkii and B . tovarensis. Members of this group share smooth periclinal walls on both surfaces, smooth-beaded and angular-roundish anticlinal walls on both surfaces, cell shape more or less sin1ilar between the two surfaces, and narrow stomatal ledges. Beilschmiedia latifolia, B. obovatLfolia, B. ovalioides and B. tovarensis differ from the other members in their variation in cell size between the two surfaces, but the variation is less distinct than the one of B. miersii, which I recognize as forming a different group. Group 2: Beilschmiedia angustifolia, B. curviramea, B. linharesensis and B. rig ida. Members of this group share dotted periclinal walls on the adaxial surface, granular periclinal walls on the abaxial surface, more or less buttressed anticlinal walls, a variation in cell shape between the two surfaces, and relatively wide stomatal ledges. Beilschmiedia 118
ig ida differs from the other members in thickness and straightness of the anticlinal walls, and might be interpreted as less closely related to the other members. Oroup 3: Beilschmiedia angustielliptica, B. brenesii and B. hondurensis. Members of this group share dotted periclinal walls on the both surfaces, buttressed and strongly sinuous anticlinal walls on both surfaces, similar cell size and shape, butterflyshaped stomatal ledges. Group 4: Beilschmiedia miersii. This species share more or less similar characters with the members of group 1, but it is distinguished from them by the great variation in cell size, which is, having larger cells on the adaxial surface than the abaxial surface. Members of group 1 usually have the epidermal cells similar in size between both surfaces or the epidermal cells larger on the abaxial surfaces. Group 5: Beilschmiedia berteroana. This species is distinguished from the other species by its box -shaped and scarcely stained stomatal ledges. Most of the groups recognized above are quite different from each other, while they share the character states consistent within each group. Group 2 has some sin1ilarities with group 1, and a few species of group 1 or Beilschmiedia rig ida of group 3 have some differences from the other members. These facts are evaluated in conjunction with the other leaf anatomical characters. 3) leaf section The most and only useful character in leaf sectional study for the systematics of neotropical Beilschmiedia species is vascular bundle arrangement in the midrib. Hypodermis and palisade tissues are sometimes variable within a species, and especially palisadal tissues are not easily distinguished from the spongy parenchyma in dried samples since shape of the tissues is sometimes modified. Presence/absence of bundle sheath extension is usually consistent within each species except forB. angustielliptica. However, this character is reported to have a relation with density of the bundles for some temperate plants by Wylie (1951), and there is a possibility that this character is not independent from fine/coarse ramification. 119
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KURENAI : Kyoto University Researc
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Contents Abstract Chapter 1 Chapter
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Chapter 1 General Introduction Laur
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Chapter 2 Revisional study of neotr
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Akkermans", if it is not a type, Be
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Straightness of the indument son1et
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Staminodia in the fourth whorl are
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elongs not to B. ova/is but to B. a
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Many species occur fron1 premontane
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Although I did not make an intensiv
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12a. Inflorescences racen1ose, more
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1. Beilscluniedia alloiophylla (Rus
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slopeS of creek, NE slope of Altos
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Rica. This group appears to have re
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anay, and he stated that the Colotn
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Phenology: collected in flower in M
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angustifolia has pubescent pistils,
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The specimen with a label saying "B
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23, 1990 (fr.), Estinoza45 (CR, INB
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Beilschmiedia rohliana Lasser, Bol.
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(fl.), Haber 11837 (MO); La Peii.a
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(F); Con. Ceylan, path La Esmeralda
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Colombia (Cuatrecasas 22220, 22438)
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locality, Nov. 29- Dec. 18, 1964 (s
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Among Brazilian Beifschmiedia speci
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van der Werff et al. 12951 (holotyp
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inside; starnens 9, filaments ca. 0
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ecause the flowers of the type coll
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This species also shares a similar
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synonym of B . sulcata, supposedly
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Additional specimen examined: Brazi
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Cristobal leaving main Hwy 100.8 mi
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pubescent with erect, curly to wavy
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Tree, to 20 m tall. Terminal buds p
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16 x (5) 6-10 em; base obtuse to cu
Page 71 and 72: Alajuela: Canton de Alfaro Ruiz, Pa
Page 73 and 74: There are several collections from
Page 75 and 76: Spiritus (Las Villas): same mountai
Page 77 and 78: (fl.), Ekman Hl4565 (MO), Apr. 3, 1
Page 79 and 80: 316, 1906, Little Jr. 6293, Aguilar
Page 81 and 82: Cerro Hueco, ca. 700 malt., Feb. 4,
Page 83 and 84: ecause there is a distribution gap
Page 85 and 86: Beilschmiedia immersinervis also ap
Page 87 and 88: hairs. Fruits ellipsoid, ca. 5 x 3
Page 89 and 90: Additional specimens examined: Cost
Page 91 and 92: 2, 1994 (young fl.), van der Werff
Page 93 and 94: In the illustration of Ruiz and Pav
Page 95 and 96: Table 1. List of the Beilschmiedia
Page 97 and 98: Legends of figures Fig. 1. Five typ
Page 99: 4 A B c . w ; . -)1 . ..... J.f D f
Page 102 and 103: o Beilschmiedia berteroana * B. bre
Page 104 and 105: o Beilschmiedia hexanrhera * B. hon
Page 106 and 107: 0 o Beilschmiedia ovaLioides *B. ov
Page 108 and 109: C::::J.o•' :: ~ ·a ' \) ' ,o 0 .
Page 110 and 111: Chapter 3. Leaf Anatomy of neotropi
Page 112 and 113: 3. Leaf sections The technique used
Page 114 and 115: 16), B. ovalis (Fig. 18), B. peruiu
Page 116 and 117: smooth. However, in B. angustielfip
Page 118 and 119: uneven-sized subsidiary cells. This
Page 120 and 121: Midrib. The most distinct character
Page 124 and 125: In leaf sectional study, neotropica
Page 126 and 127: Species of group 2 have leaves oppo
Page 128 and 129: Table 1. List of samples for venati
Page 130 and 131: 0\ Table 2. Continued. B. emarginat
Page 132 and 133: Legends of figures Fig. 1-25. Venat
Page 134 and 135: Fig. 122-143. Midrib sections of ne
Page 136 and 137: 2 132
Page 138 and 139: 10 1 1 12 \ 14 134
Page 140 and 141: 136
Page 142 and 143: 138
Page 144 and 145: 140
Page 146 and 147: 142
Page 148 and 149: 144
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Page 152 and 153: 148
Page 154 and 155: 150
Page 156 and 157: 152
Page 158 and 159: 154
Page 160 and 161: References Allen, C. K. 1945. Studi
Page 162: Meissner, C. F. 1864. Lauraceae. Pp
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