Flora of Dominica, Part 2 - Smithsonian Institution Libraries

NUMBER 77 CONVOLVULACEAE 71
Ipomoeafitulara Martius ex Choisy in A.P. Candolle, 1845,9:349.
Erect shrub to 4 m with showy, lavender flowers to 9 cm
long.
South American, widely cultivated; escaping from cultivation
in Dominica along west coast Fond Colet, north of Roseau
(Ernst 2153, road to Cabrits and in Portsmouth @€IN!).
Ed. Note: Miss Powell’s typescript, submitted in 1969,
was in agreement with and substantially anticipated Dr.
Austin’s conclusions.
Ipomoea heder(fo1ia
lpomoea hederifolia Linnaeus, 1759a:925.-Hallier,
1959:45.-Powell, 1979253.
Ipomoea coccinea sensu auct., non Linnaeus.
lpomoea angulata Lamarck, 1791, Tabl., 1:164.
1899:415.4’Donell,
Herbaceous vine with scarlet, salver-shaped flowers; sepals
rounded, f equal, subulate-appendaged near the apex, the
appendage equal to or longer than the sepals; capsule erect,
short-beaked, 4-seeded, the transparent septae persisting after
the seeds have been shed.
Neotropical but introduced into the Old World tropics; in
Dominica on west coast in old citrus orchard: Colihaut (Ernst
1118).
This species is found throughout the West Indies. It can be
distinguished by its calyx and capsule from I. coccinea, which
is restricted to the American continent. In I. coccinea the sepals
are larger, very clearly overlapping, decidedly unequal, and the
appendage is very clearly shorter than the longest sepal. The
mature capsule has a long beak (3 mm) and the pedicel makes
an angle of 45” or less with the peduncle, and so the capsule is
reflexed rather than erect.
Ipomoea nil
lpomoea nil (L.innaeus) Roth, 1797, 1:36.-Powell. 1979:255.
Convolvulus nil Linnaeus, 1762:219.
Convolvulus hederaceus Linnaeus, 1762:219.
Herbaceous twiner, hairy; sepals densely pilose below, long
and narrow above; corolla to 9 cm, clear blue; capsule 3-valved,
3-celled with 6 seeds.
Pantropical; an escape in Dominica: Sylvania (Hodge 1132).
Ipomoea obscura
Ipomoea obscwa (Linnaeus) Ker, 1817a.-Powell, 1979956.
Convolvulus obscwa Linnaeus, 1762:220.
Slender vine; leaves entire, cordate, to 8 cm long; peduncles
1-3-flowered; corolla white or cream, dark-centered.
Widespread in tropics; new record for Dominica on dry west
coast: Portsmouth (Whitefoord 5500). Whitefoord (1989:148)
reported another collection (5005) from Massacre.
Ipomoea pes-caprae
lpomoea pes-caprae (LInnaeus) R. Brown, 1818 [Mar]:477.
Convolvulus per- caprae Linnaeus, 1753: 159.
The typical subspecies occurs in the Old World. The species
is represented in Dominica by the following:
Ipomoea pes-caprae subsp. brasiliensis
Ipomoea pes- caprae subsp. brasiliemiv (Linnaeus) Ooststroom, 1940533.-
Steam, 1%1:237.-Powell. 1979:257.
Convolvulus bradiemis Linnaeus, 1753:159.
lpomoea bradiemis (Linnaeus) Sweet, 1818 [Jun-Jul]:35.-Meyer, 1818
”ovl:97.
Beach morning-glory, patate bord la mer.
Seaside plant, glabrous, prostrate, rooting at nodes; leaves k
coriaceous, emarginate to bilobed; corolla showy, funnelshaped,
-5 cm long, lavender-pink.
Tropical sea beaches; in Dominica common along sea coast:
Marigot (Hodge 810), Hatton Garden (Hodge 2960), St.
David’s Bay (Wilbur 7981), mouth of Layou River (Ernst
1544).
Leaves of this species are used by the Caribs in ritual baths
(Hodge and Taylor, 1957598).
Ipomoea imperati (Vahl) Grisebach (incl. Ipomoea stolonifera
Gmelin, a similar prostrate plant growing in the same
kind of habitat in the Caribbean area), has not been reported
from Dominica. It has white flowers and is smaller in every
respect.
Ipomoea phyllomega
Ipomoea phyllomega (Vellozo) House, 1908:246. “phillomega”.-Powell,
1979257.
Convolvulus phyllomega Vellozo, 1829:74. “philomega”; 1831, 2, pl. 63,
“phillomega.”
lpomoea capparoides Choisy. 183959.
lpomoea demerariana sensu Grisebach, 1862~471, non Choisy.
Liane douce.
High climbing forest twiner, with cordate leaves to 23 cm
long, veins forming a conspicuous overall spider web pattern;
inflorescence a lax cyme of magenta, bell-shaped flowers; two
outer sepals larger and enclosing the other three.
Tropical America; in Dominica at mid-elevations along west
coast Deux Branches, Jean (Ernst 1815), Layou forest, Mt. Joy
(Emst 1952), Sylvania (Hodge 809), Syndicate Estate
(Wasshausen & Ayensu 313, Whitefoord 3902).
A leafless fruiting (in Oct) specimen from northwest slopes
of Morne Diablotins (Syndicate) seems to be this species
(Whitefoord 4390).
Ipomoea quamoclit
Ipomoea quamoclit Linnaeus, 1753 : 159.-Powell, 1979258.
Convolvulus pennatus Desrousseaux in Lamarck. 1789,3567.
Quamoclitpennata (Desrousseaux) Bojer, 1837224. “pinmafa.”
Glabrous, herbaceous vine; leaf blades ovate in outline,
deeply pinnately partite, segments linear, the lowest pair