Flora of Dominica, Part 2 - Smithsonian Institution Libraries
Flora of Dominica, Part 2 - Smithsonian Institution Libraries
Flora of Dominica, Part 2 - Smithsonian Institution Libraries
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
182 POLY CXJNACEAE-F~RTIJLACACEAE<br />
SMITHSONIAN CONTRIBUTIONS TO BOTANY<br />
Coccoloba venosa<br />
Coccolobn venosa Linnaeus, 1759a:1007.-Howard,<br />
1959a:92.<br />
Tree to 15 m; leaves membranous, usually broadest above<br />
middle; flowers and hits distinctly pedicelled.<br />
Hispaniola to Trinidad; apparently uncommon on <strong>Dominica</strong><br />
on west coast: between Roseau and Canefield (Hodge 443).<br />
Flowering in August.<br />
Polygonum Linnaeus<br />
1. Ochreae (petiolar sheaths) without long bristles at apex<br />
....................... R densflorum<br />
1. Ochreae bearing long bristles at apex.<br />
2. Racemes continuous; tepals epunctate; styles 2; achenes<br />
lenticular. ............... P. acuminatum<br />
2. Racemes interrupted; tepals glandular-punctate; styles<br />
3; achenes triquetrous .......... I? punctatum<br />
Polygonum acuminatum<br />
Polygonurn acwninutwn Kunth, 1817,2:178.<br />
Persicaria acuminata (Kunth) Gomez de la Maza, 1896278.<br />
Perennial, pubescent herb to 2 m; ochreae ciliate; leaves<br />
strigose; styles 2; achenes lenticular.<br />
Neotropics; cited for <strong>Dominica</strong> by VClez (1957:lll) and<br />
known from Guadeloupe and Martinique but no specimens<br />
seen from <strong>Dominica</strong>.<br />
Polygonum densiflorum<br />
Polygonum demijlorum Meisner in Martius, 1855, 5(1):13.-Weatherby,<br />
1923:20.<br />
Polygonwngkabrwn sensu Grisebach, 1860:161,709, non Willdenow.<br />
Polygonwn portoriceme Benero ex Small, 1895:46.<br />
Persicaria portoricemis (Small) Small, 1903:377.<br />
Perennial, glabrous herb to 1.5 m: ochreae not ciliate; styles<br />
2(-3?); achenes lenticular (or triquetrous?).<br />
Pantropical but very uncommon in the Lesser Antilles; only<br />
once collected in <strong>Dominica</strong>: sine loc. (Zmray 407 at K).<br />
Polygonum punctatum<br />
Polygonwn punctatum Elliott, 18 17,1:454.<br />
Polygonwn acre Kunth, 1817,2:179.<br />
Persicaria punctata (Elliott) Small, 1903:379.<br />
Annual or perennial, glabrous herb with decumbent stems to<br />
2 m; ochreae ciliate; leaves ciliolate, glandular-punctate; styles<br />
3; achenes triquetrous.<br />
Neotropics; in <strong>Dominica</strong> on wet ground in disturbed areas:<br />
Bells (Whitefoord 6148), Clarke Hall Estate (Chambers 2798,<br />
Ernst 1695, Stern & Wasshausen 2438), Prince Ruperts Head<br />
marsh, i.e., Cabrits swamp (Finlay s.n., 30 May 1792 at K).<br />
PORTULACACEAE<br />
1. Leaves with tuft-like axillary hairs: flowers solitary or<br />
clustered, sessile; style branches 3-12, ftee, capsule<br />
circumscissile .................. Portulaca<br />
1. Leaves without tufts; flowers panicled, pedicellate; style<br />
branches 3, united: capsule 3-valved ...... Talinum<br />
Portulaca Linnaeus<br />
Portulaca grandgora W. Hooker was reported to have<br />
medicinal uses on <strong>Dominica</strong> by Adjanohoun et al. (1985165,<br />
pl. 131).<br />
Portulaca quadrij?du Linnaeus was attributed to <strong>Dominica</strong><br />
by Vt!lez (1957: 11 1) but no specimens have been seen. It has<br />
the flattened leaves <strong>of</strong> P. ulerucea (much smaller) but is<br />
conspicuously pubescent, has opposite leaves and pedicelled,<br />
tetramerous flowers.<br />
Portulaca teretifoliu Kunth was attributed to <strong>Dominica</strong> by<br />
Howard (1988,4:205) with an exclamation mark. It seems to<br />
differ from P. pilosa by having much less conspicuous axillary<br />
(nodal) hairs and gray seeds.<br />
1. Leaves flat, not linear; plants 2 glabrous ...<br />
I? oleracea<br />
1. Leaves 2 cylindrical, linear; plants usually conspicuously<br />
pubescent with tufts <strong>of</strong> hairs in axils.<br />
2. Flowers yellow to yellowish; capsule circumscissile<br />
below middle; leaves usually c1 cm long. .......<br />
...................... I? halimoides<br />
2. Flowers reddish; capsule circumscissile at middle:<br />
leaves usually >1 cm long .......... P. pilosa<br />
Portulaca oleracea<br />
Portulaca oleracea Linnaeus, 1753:445.<br />
Purslane, coupit!, pourpier.<br />
Plants succulent; axillary tufts <strong>of</strong> hairs inconspicuous; leaves<br />
obovate to spatulate; flowers yellowish; capsule circumscissile<br />
near middle; seeds black, finely granulate.<br />
Pantropical weed, in <strong>Dominica</strong> near sea level on west coast:<br />
Colihaut (Kimber 1071, Lloyd 861), Loubi6re (Hodge 3866),<br />
Rodneys Rock (DeFilipps 170), Roseau (Emst 2151).<br />
Used by Caribs as a green vegetable and as a poultice for<br />
back pains (Hodge and Taylor, 1957557). Adjanohoun et al.<br />
(1985165, pl. 132) reported more medicinal uses.<br />
The Roseau collection (Emst 2151), found in paving stones<br />
and rock walls, needs further study. It is succulent and<br />
subglabrous like P. oleruceu but has distinctly opposite leaves<br />
like P. quadrifida. It could be an aspect <strong>of</strong> P. okracea.<br />
Portulaca halimoides<br />
Portulaca halimoides Linnaeus, 1762:639.-Lgrand, 1962:99.<br />
Portulaca martinicensir Urban, 1907,5:342.
Change language