Flora of Dominica, Part 2 - Smithsonian Institution Libraries

NUMBER 77 FABACEAE 111
Shrub or small tree; pinnae of 1 pair; leaflets -4 cm x 3 cm,
rounded, flowers pink, glabrous.
Neotropics; common in dry scrub along west coast of
Dominica: Canefield (Whitefoord 6084), Grand Savanne
(DeFilipps 172, Ernst 1043, Ramuge s.n.), Pointe Michel
(Gillis 811 7).
Pterocarpus Jacquin, nom. cons. (Faboid)
Pterocarpus officinalis
Pterocarpus o~cinalis Jaquin. 1763 [Jul]:283.
Pterocorpus draco Linnaeus, 1763 [Aug]:1662.
Tree with fluted base; leaves odd-pinnate, leaflets alternate;
flowers yellow, standard orbicular; pod flat, indehiscent,
obliquely orbicular, broadly winged on one side, 1-seeded.
Neotropics; dominant along sluggish rivers on north end of
Dominica: Cabrit Swamp (Whitefoord 4067), Calibishie
(Hodge 3147), Eden River (Chambers 2601, Ernst 2090),
Indian River (Hodge 3752), near St. Johns (Eggers 777),
Woodford Hil River (Howard 11748), sine loc. (Fishlock 15).
Rhynchosia Loureiro, nom. cons. (Faboid)
Perennial vines with 3-foliolate, often resin-dotted, stipellate
or estipellate leaves; stamens 9+1; ovules (1-)2; pod flat.,
1-Zseeded, sometimes constricted between seeds; seeds with
red around the hilum and the rest black or only a tip black, or
brown (with black spots) or black.
1. Stipels present; calyx lobes all lanceolate; pods not
constricted between brown or black seeds.
2. Leaflets puberulent only on veins below; calyx c4.5 mm
long; petals yellow with standard streaked with purple
........................ R. minima
2. Leaflets tomentose below; calyx >5 mm long; petals
yellow ................... R. reticdata
1. Stipels absent; calyx lobes ovate, except for lower
lanceolate lobe; pods constricted between red and black
seeds.
3.
3.
Leaflet puberulent below; bracts (soon deciduous)
lanceolate, less than 1 mm broad; pods glabrous
..................... R. erythrinoides
Leaflet tomentose below; bracts (soon deciduous)
oblanceolate, about 2 mm broad; pods puberulent
..................... R. phaseoloides
Rhynchosia erythrinoides
Rhynchosia erythrinoides Schlechtendal & Chamisso, 1830587.--Grear,
1978:SO.
Leaflets puberulent below, slightly (1.2~) longer than broad;
pod glabrous, often blackish; seed mostly black with red
around the hilum.
Mostly Central America, but also Jamaica, Hispaniola,
Ecuador, and Colombia; known from Dominica only from
flowering material (Zmray s.n. at GH) mixed with fruiting
material of R. phaseoloides.
This record is dubious. Could flowering Jamaican material
been accidentally added to Imray’s fruiting Dominican material,
say by Grisebach?
This taxon is commonly treated as a synonym of R.
phaseoloides (an older name) or R. pyramidalis (an even older
name) but Grear separates it. What is called R. phaseoloides in
Adams (1972355) is R. erythrinoides, although true R.
pyramidalis also occurs there (Miller 1421).
Rhynchosia minima
Rhynchosia mind (Linnaeus) A.P. Candolle, 1825,2:385.-Grear, 1978:76.
Dolichos minimus Linnaeus, 1753:726.
Leaflets stipellate, conspicuously black-resin-dotted below,
to 3 cm x 2 cm; calyx