Flora of Dominica, Part 2 - Smithsonian Institution Libraries

56 BORAGINACEAE SMlTHSONIAN CONTRIBUTIONS TO BOTANY
Heliotropium ternatum
Heliotropium ternatwn Vahl, 1794,3:21.
Helwtropium fruticoswn sensu Grisebach, 1862486, nm Linnaeus.
Helwtropium humile (Linnaeus) R. Brown ex Roemer & Schultes, 1819,4:37,
non Lamarck.-Urban, 1910.4527.
Shrub to 0.5 m; leaves f sessile, often ternate, white-hairy
beneath, linear, to 3 cm x 0.5 cm, margins often revolute;
inflorescence short, to 6 cm; fruit 4-lobed, hispid.
West Indies, Yucatan, northern South America; very
common in Dominica, co-dominant in xerophytic scrub of west
coast Batali River (Chambers 2789), Colihaut (Ernst 1140,
Grand Savanne (Hodge 3790, Lloyd 827, Nicolson 1942, Stehle
6315, Stern & Wasshamen 2538, Webster 13169, Wilbur
7630), Mero Valley (Kimber 932), Wallhouse (Eggers 934).
True H. fruticosum, of the Greater Antilles and Central
America, is a smaller, more compact annual with large leaf-like
bracts on an attenuate inflorescence.
Tournefortia Linnaeus
1. Leaves usually >4 cm broad; corolla white; corolla lobes
triangular, acute; flowers sessile; fruit an ovoid, unlobed
white drupe.
2. Sprawling shrub or climber; leaves ovate (2x longer than
broad), obtuse to acute at base; corolla tube constricted
near middle; style none (stigma sessile) . . . T. bicolor
2. Tree or shrub; leaves lanceolate (4x longer than broad),
attenuate at base; corolla tube bulged near middle; style
elongate . . , . . . . . . . . . . . . . . . . T. filiflora
1. Leaves usually (Emst 1765,1933),
Salybia area (Hodge 3084, 3281), South Chiltern (Stern &
Wasshamen 2537).
Johnston (1949b:131) included this element in T. volubilis, a
very variable species with phases appearing erratically in
widely separated places and with gradations in the same
locality. However, this hispid element occurs only in one
contiguous area and without gradations.
Tournefortia filiflora
Tourneforfia firifora Grisebach, 1862:483.-Johnston, 1949b 132.-Little et
al., 1974:852, pl. 6n.-hurteig, 198~~388.
Tourneforfia foetidissima sensu Grisebach. 1.c.. p.p., nm Linnaeus.
Coarse shrub to tree to 8 m; leaves oblong-elliptic, 20(-40)
cm x 8(-15) cm, base tapering to 2(-3) cm petiole; 8-12 pairs
5 opposite lateral veins k prominent; corolla tube slender,
swelling slightly at midpoint; style 1.5 mm, with corolla often
persistent.
Puerto Rico through Lesser Antilles; common in Dominican
woodlands at low to mid-elevations: Clarke Hall (Wasshausen
& Ayensu 304), Fond Baron (Ernst 1964), Layou Valley
(Webster 13277), South Chiltem (Hodge 1592), Syndicate
(Ernst 2105), sine loc. (Imray 322, TYPE).
Grisebach’s citation of 1:foetidissima for Dominica apparently
rests on his tentative identification of an Imray specimen
(K), “an T, foetidissima? L. sed lobi calyci acuti.” This
specimen is clearly Zfiliflora. burteig (1988a:388) discussed
Tournefortia foetidissimum Linnaeus.