Flora of Dominica, Part 2 - Smithsonian Institution Libraries

NUMBER 77 MELASToMAWCEAE 149
(Stehleb 6101, 6103, Castle Bruce road (Cowan 1622), Deux
Branches (Chambers 2763, Ernst 1807, Hodge 3126,3441), La
Chaudiere (Hodge 3570), Laudat (Beard 1467, Eggers 621 at
GH, s.n., Hodge 1985, Lloyd 188), Lisdara (Hodge 2350),
Milton Estate (Hodge 2579), Morne Anglais (Wilbur 7957),
Morne Couronne (Webster 13206, 13223, 13230), Morne
Diablotins (Webster 13325), Morne Negres Marrons (Hodge
1059), Morne Micotrin (Ernst 1768, 2175, Chambers 2563,
2570, Kimber 949, Nicolson 1992, Stern & Wasshausen 2572,
Wilbur 7427), Morne Plat Pays (Wilbur 7879), Mahaut River
(Proctor 17512), Pont Casse area (Ernst 1288, Hodge 1197,
Webster 13387, Wilbur 7565). Sylvania (Cooper 95, Hodge
3972), Syndicate (Ernst 2000, Whitefoord 4355, 5573, sine
loc. (Zmray I75 at GH).
Graffenrieda A.P. Candolle
Graffenrieda latcfolia
Graffenriedo lotifolia (Naudin) Triana, 1871:71.-Domin, 1930b:36.
Cycnopodiwn lotifolium Naudin, 184552.
Miconia catalpifolia Kriinzlin, 1931:153.
Tree to 9 m; twigs stout with conspicuous leaf scars; leaves
7-9-veined, broadly ovate to orbicular, short-acuminate, base
obtuse, to 20 cm x 20 cm; petiole to 13 cm; panicle terminal, to
30 cm; hypanthium 2.5 mm, sepals 1.5 mm, petals to 5 mm,
white; capsule 4 mm x 2.5 mm, ribbed, k urceolate.
Lesser Antilles to northern South America; at mid- to upper
elevations (400-800 m) on Dominica: Bois Diable Ridge
(Stern & Wasshausen 2543, Castle Bruce Road (Cowan 1600),
Diablotins (Lloyd 907), En Haut Jean (Webster 13508), Laudat
(Eggers 750), Mome Micomn (Burch 1363, Ernst 1724,
Webster 13240), Mome Plat Pays (Hodge 1739), Pont Casse
(Ernst 1127, Wilbur 7764), Sylvania (Cooper 120, Hodge 517,
3852, 3971), sine loc. Krauss s.n., E). Flowering April-July,
fruiting June-July.
Henriettella Naudin
Henriettella laterifora
Henriettella 1aterifTora (Vahl) Triana, 187 1 :144.-Domin, 1930b:44.
Melastoma lateriflorum Vahl, 1797, Eclog., 1 :48, “lateriflora.”
Ossaea lateriflora (Vahl) A.P. Candolle, 1828.3:169.
Henriettea 1aierifIora (Vahl) Howard [ex Foumet, 1978:914. nun. invalid.
(Art. 33.2)] & Kellogg, 1986:246.-Howard, 1988:286.
Small tree to 7 m; leaves clustered at ends of branches,
glabrous, 3-veined, elliptic, acuminate, base attenuate, to 6.5
cm x 2.5 cm; petiole 1.5 cm; flowers 4-merous, clustered at
nodes below leaves, few per cluster; pedicels 1 cm; hypanthium
and calyx green, 2 mm; corolla 3 mm, white, calyptrate.
Montserrat, Guadeloupe, Martinique; collected in Dominica
only in vicinity of Freshwater Lake, 800 m: (Eggers 638 at GH,
Ernst 2163, sine loc. (Imray 190,330 at GH). Young flower in
August.
Miconia Ruiz & Pav6n
Miconia cornifolia (Desrousseaux) Naudin (incl. Miconia
cinnamomifolia (Jacquin) Triana, non Naudin), another Lesser
Antillean endemic species, was reported for Dominica by
Cogniaux (in A.L. and A.C. Candolle, 1891, 7:765) and
Howard (1989, 5:557). This may involve misidentification of
Dominican material of variable M. stnata (Vahl) Cogniaux.
Miconia cornifolia has distinctly larger flowers and a calyptrate
calyx. Fruiting specimens are difficult to distinguish.
Miconia splendens (Swartz) Grisebach (18m.256) was
reported from Dominica by Grisebach (l.c.), based on an Imray
collection. The range of this species seems to exclude the
Lesser Antilles. This record may be a misidentification,
perhaps of M. trichotoma or M. furfuracea.
1. Mature leaf-blades glabrous beneath.
2. Branchlets and inflorescences with tufts of hairs at
nodes ................. M. globuliflora
2. Branchlets and inflorescences not as above.
3. Leaves 3-veined, usually >15 cm long.
4. Leaves .t sessile, base k cordate; petiole 0.5 cm
..................... M. ernstii
4. Leaves clearly petioled, base rounded (at most);
petiole >1 cm.
5. Flowers 5-merous, mid-sized (petals >5 mm);
leaf-apex long-attenuate ...... M. stria&
5. Flowers 4-merous, minute (petals to 1 mm);
leaf-apex acuminate to short-attenuate
................. M. trichotoma
3. Leaves 5-veined, usually c 11 cm long.
6. Leaves small (c6 cm), apex blunt-apiculate
................... M. mornicola
6. Leaves large (>6 cm), apex attenuate to acuminate.
7. Leaf-margins usually revolute; sepal lobes
round with a dorsal lobed spine. .......
.................. M. coriacea
7. Leaf-margins not revolute; sepals triangular,
spine indistinct or wanting . . M. globulifora
1. Mature leaf-blades pubescent beneath, at least on veins.
8. Leaves pubescent beneath only on veins.
9. Leaf-veins pubescent above and beneath; margins
crenate-setose; flowers minute . ... M. racemosa
9. Leaf-veins glabrous above; margins entire or serrate;
flowers not minute.
10. Flowers large (petals 7 mm); leaves broadly
ovate-elliptic, apex acuminate, margins entire
................... M. futfuracea
10. Flowers small (petals 3 mm); leaf ovatelanceolate,
apex attenuate, margins serrate with
sparse setae . ............ M. laevigata
8. Leaves pubescent on and between veins.