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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NUMBER 77<br />
MELASTohtATACEAE<br />
Generic Key<br />
(by J. Wurdack)<br />
1. Ovary superior (free from hypanthium); fruit capsular.<br />
2. Leaves 1 cm or shorter; flowers 5-merous ..............<br />
Tibouchina<br />
2. Leaves 3 cm or longer, flowers 4-merous.<br />
3. Upper leaf-surface strigose: hypanthium densely setose with stalked hairs<br />
................................... Pterolepis<br />
3. Upper leaf-surface glabrous: hypanthium glandular- or stellulate-puberulent.<br />
4.<br />
4.<br />
1. Ovary partly or completely inferior: fruit baccate.<br />
5. Flower invested by 2 pairs <strong>of</strong> bracts 1.2-2.0 cm wide ..........<br />
Blakea<br />
5. Flower without prominent bracts or with only 1 pair c1 cm wide.<br />
6. Inflorescences on old wood below the leaves, pedicels arising in fascicles<br />
Henriettella<br />
Leaves 7-9-veined, 10-20 cm wide ............. Graffenrieda<br />
Leaves 5-(or faintly 7-)veined, 2-4 cm wide .......... Nepsera<br />
directly from the branches ....................<br />
6. Inflorescences terminal or in well-defined panicles from upper leaf-mils.<br />
7. Calyx-limb calyptrate, shed as bud expands; flowers pleiostemonous<br />
................................. Conostegia<br />
7. Calyx-limb truncate or regularly lobed, persistent at anthesis; flowers with<br />
no more than 2x as many stamens as petals.<br />
8. Inflorescences lateral; flowers 4-merous ............ Clidernia<br />
8. Inflorescences terminal or appearing so; flowers 4-6-merous.<br />
9. Anthers rimose (opening by longitudinal slits) ..... Charianthus<br />
9. Anthers opening by apical pores.<br />
10. Leaves moderately appressed-setose above ..... Clidernia hirta<br />
10. Leaves glabrous on upper surface.<br />
11. Mature leaves glabrous or sparsely puberulous beneath, the<br />
surface visible between the hairs ............ Miconia<br />
11. Mature leaves completely covered with stellate or lepidote hairs.<br />
12. Bracteoles inconspicuous, c1 mm long, caducous . ......<br />
........................... Tetrazygia<br />
12. Bracteoles 2, 6-12 mm long, persistent nearly to anthesis<br />
............ Miconia dodecandra and M. rnirabilis<br />
Alternate Key<br />
(by A.C. Nicolson)<br />
1. Branchlets and inflorescences with tufts <strong>of</strong> hair at nodes.<br />
2. Flowers 4-merous; anthers rimose (slits) ........ Charianthus purpureus<br />
2. Flowers 5-merous; anthers with apical pores . ...... Miconia globuliflora<br />
1. Branchlets glabrous or with vesture not localized at nodes.<br />
3. Herbs.<br />
4. Leaves thin, glabrous; inflorescence diffuse, branches filiform ........<br />
............................... Nepsera aquatica<br />
4. Leaves thicker, pubescent or scabrous; inflorescence not as above.<br />
5. Leaves large (>5 cm), 5-veined; inflorescences not glomerulate; hypanthium<br />
with simple hairs ..................... Clidemia<br />
5. Leaves small (c4 cm), 3-veined; inflorescence glomerulate: hypanthium<br />
with stalked hairs ..................<br />
Pterolepis glomerata<br />
3. Shrubs or trees.<br />
6. Calyx limb calyptrate.<br />
Conostegia<br />
7. Stamens many ..........................<br />
7. Stamens 10. ......................... Miconia striata<br />
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