Flora of Dominica, Part 2 - Smithsonian Institution Libraries
Flora of Dominica, Part 2 - Smithsonian Institution Libraries
Flora of Dominica, Part 2 - Smithsonian Institution Libraries
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8 SMITHSONIAN CONTRIBUTIONS TO BOTANY<br />
broader treatment see Pteridophyta by Proctor (in Howard,<br />
1977,2:1-414).<br />
GROUP 2. GYMNOSPERMS<br />
For <strong>Dominica</strong>, this group is covered by Hodge (1954) with<br />
one species, Fobcarpus coriuceus (L’Heritier) Persoon, the<br />
raisinier montagne, a common evergreen <strong>of</strong> mountain ridges. It<br />
is the national tree <strong>of</strong> <strong>Dominica</strong> and has been planted in the<br />
Roseau Botanic Garden. Other gymnosperms may be cultivated.<br />
GROUP 3. MONOCOTS<br />
For <strong>Dominica</strong>, this group is covered by Hodge (1954) with<br />
186 species in 138 genera and 21 families. For more recent<br />
treatments see Orchidaceae by Garay and Sweet (in Howard,<br />
1974, 1:l-235) and other Monocotyledoneae by Howard<br />
(1979,3:1-586).<br />
GROUP 4. ACHLAMYDEOUS AND MONOCHLAMYDEOUS DICOTS<br />
1. Leaves 0; root-parasites without chlorophyll ........ BALANOPHORACEAE<br />
1. Leaves present, sometimes reduced; plants not root-parasites, with chlorophyll.<br />
2. Leaves opposite or whorled.<br />
3. Branchlets jointed and green; leaves reduced to whorled scales (cult.)<br />
............................... CASUARINACEAE<br />
3. Branchlets not jointed; leaves usually normal.<br />
4. Plants parasitic on tree branches. ............ LORANTHACEAE<br />
4. Plants not parasitic on tree branches.<br />
5. Leaves trifoliolate; climbing with twisting petioles ............<br />
............................ RANUNCULACEAE<br />
5. Leaves simple; not climbing.<br />
6. Stipules present (sometimes minute in Chamaesyce).<br />
7. Ovary 3-locular; stipules usually free ................<br />
.................. EUPHORBIACEAE (Chamaesyce)<br />
7. Ovary 1-2-locular; stipules connate, at least at base.<br />
8. S tipules connate at base; ovary 2-locular, woody .........<br />
................ RHAMNACEAE (Krugwdendron)<br />
8. Stipules connate; ovary I-loculw, herbaceous.<br />
9. Ovary inferior; calyx absent ....... CHLORANTHACEAE<br />
9. Ovary superior; calyx present ......<br />
URTICACEAE (Pilea)<br />
6. Stipules absent.<br />
10. Flowers in fleshy spikes; calyx absent. ...............<br />
..................... PIPERACEAE (Peperomia)<br />
10. Flowers not in spikes or, if so, not fleshy; calyx present.<br />
11. ovary inferior ........... MYRTACEAE (CUlyptrantheS)<br />
11. Ovary superior.<br />
12. Carpels several, free ..............<br />
MONIMIACEAE<br />
12. Carpel($ solitary or united.<br />
13. Fruit a circumscissile capsule; plants fleshy . . AIZOACEAE<br />
13. Fruit not capsular; plants herbaceous or woody.<br />
14. <strong>Flora</strong>l bracts scarious; fruit an utricle ...........<br />
.................... AMARANTHACEAE<br />
14. <strong>Flora</strong>l bracts not scarious; fruit an anthocarp. ......<br />
.................... NYCTAGINACEAE<br />
2. Leaves alternate.<br />
15. Inflorescence a fleshy spike ................... PIPERACEAE<br />
15. Inflorescence not a spike or, if so, not fleshy.<br />
16. Base <strong>of</strong> petiole sheathing stem (ochreate) ........ POLYGONACEAE<br />
16. Base <strong>of</strong> petiole not ochreate.<br />
17. Stamens opening with 2-4 trapdoor-like valves ...... LAURACEAE<br />
17. Stamens opening by 1-2 longitudinal slits.
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