Flora of Dominica, Part 2 - Smithsonian Institution Libraries

130 LOBELLACME SMITHSONIAN CONTRIBUTIONS TO BOTANY
strongly arcuate, nonfenestrate corollas, generally longer
filament tubes, and wider hypanthia
1. Anthers all (5) densely white-tufted at apex.
2. Flowers in terminal racemes; corolla white-greenish
yellow . . . . . . . . . . . , . . . . . . . L. cirsiifolia
2. Flowers solitary, axillary, corolla red or yellow . . . .
. . . . . . . . . . . . . . . . . . , . , . . . L. kraussu
1. Anthers of two kinds, lower two densely white-tufted and
upper three glabrous at apex.
3.
3.
Annual herbs; leaves deltoid, toothed, 2-3 cm long,
pubescent; corolla 5-6 mm long; upper 3 anthers
pubescent below apex . . . . . . . . . . L. cliffortiana
Perennial shrubs; leaves linear-lanceolate, spinulose,
9-24 cm long, glabrous; corolla 1.3-1.5 cm long; upper
3 anthers glabrous . . . . . . . . . . . . . . . L. strich
Lobelia cirsiifolia
Lobelia cirsiifolio Lamarck, 1792, Encycl., 3584.
Tupa cirsiifolia (Lamar&) A.L. Candolle in A.P. Candolle, 1839,7:395.
Tvpa digitrrlifolio Grisebach, 1861:387.
Lobelia digilalifolia (Grisebach) Urban, 1899, 1:455.
Z’eb apite.
Herbs 1.0-1.5 m; leaves lanceolate, to 21 cm long, teeth
ascending to spreading, to 1 mm long; sepals entire to k entire.
Lesser Antilles; in Dominica on ridges in rainforest,
600-800 m: Breakfast River (Hodge 1893, En Haut Jean
(Webster 13523, Fon Pays (Hodge 2839), Freshwater Lake
(Eggers s.n.), Laudat (Hodge 1859, Lloyd 253, Morne Anglais
(Hodge 2299), Syndicate (Ernst 2001,2109, Webster 13320).
Lobelia digitalifolia apparently differs from L. cirsiifolia
only in having small (4 mm long) incurved spinules along the
leaf margin. In L. cirsiifolia the teeth are larger (1-4 mm long)
and ascending to spreading. The floral measurements given in
the key by McVaugh (in North Amer. Fl., 1943,32A37) do not
serve to separate the species because measurements of recent
collections apparently bridge the supposed gap. McVaugh’s
note that flower color is brownish purple in L. digitalifolia is
not supported by Grisebach’s description as “pale.” The
differences between these taxa seems insufficient to differentiate
species.
What Sastre (1985: 167) called Lobelia stricta belongs to this
complex (5 anthers tufted). It is not clear what the taxon is but
from what Sastre said, it is only known from St. Kitts and
Nevis, apparently Lobelia infesta (Grisebach) Urban.
Lobelia cliffortiana var. xalapensis
Lobelio cliffortiom var. xalapenrb (Kunth) Gray, 1878,2:7.
Lobelia xalapenrb Kunth, 1819,3:315.
Lobelia mollis Graham, 183Oa:185.
Herbs with deltoid, toothed leaves with sparse pubescence;
pedicels prickly to scabrous; corolla 5-6 mm long, bluish;
capsule nearly superior.
Central and South America, Lesser Antilles; in Dominica in
cultivated areas: Magua (Stehle 6336, 6358, 6292), Milton
(Hodge 2559). Ridgefield (Hodge 2136). Rivihre Douce
(Eggers 80).
Lobelia clifortiana and L. xalapesis have been maintained
as separate species by the most recent monographers of the
group, McVaugh and Wimmer. However, the taxa are
apparently very close morphologically and differ in what
appear to be minor characters from a survey of specimens from
the range of the two. The typical element, distinguished by its
usually glabrous pedicels and nearly half-inferior capsule, is
frequently attributed to Dominica, but is limited to the Greater
Antilles and introduced in a few localities in the Old and New
World tropics. Within the range of the species, the distinguishing
characters are seemingly variable, but reliable enough to
separate the tam at an infraspecific level.
Lobelia kraussu
Lobelia baussii Graham. 183Oa [Apr]:379; 183Ob [Sep].
Glabrous herbs to 1 m tall; leaves petiolate; pedicels 4-6 cm
long; corollas 2.5-3.5 cm long, fenestrate, straight or nearly so,
red, rarely yellow. Fenestrae are two basal, elliptic openings in
the corolla, one on each side of the main cleft through which the
filament tube protrudes. One opening is discrete, the other is
part of an elongated but incomplete cleft in the corolla.
Dominica and Martinique; in Dominica common on road
banks in rainforest, 150-1500 m: Baiac (Whitefoord 3782),
Fon Pays (Hodge 2858), Imperial Road (Fairchild 2674),
Laudat (Eggers 694, Lloyd 242, Nicolson 1844), Lisdara
(Hodge 788), Mome Anglais (Hodge 2257), Morne Plat Pays
(Wilbur 7854), Pichelin (Ernst 1615, Wilbur 7612), Roseau
Valley (Howard 11742), South Chiltern (Hodge 1450, Stern &
Wasshausen 2514), Sylvania (Cooper 87, 87A, Hodge 1172,
Proctor 25761), Syndicate (Erst 2014, 2015, Wasshausen &
Ayensu 345).
Ernst 2015 is the yellow-flowered phase.
Lobelia stricta
Lobelia strictu Swam, 1788:117.-McVaugh in North Amer. Fl.. 1943,
32A:89.
Lobelia areolala L. Richard ex Jussieu, 181 1:3.-Sastre, 1985:168.
[i’jdomiwnflavescenr Presl, 1836:32, nom. nud.]
Tupajlavescenr Presl ex A.L. Candolle in A.P. Canblle, 1839,7:395.
Lobelia jlavescenr (A.L. Candolle) Wimmer in Engler, 1953, IV.276 (Heft
107):626.
Coarse, colonial shrubs to 2 m, single-stemmed or with
candelabra-like habit; stems with prominent leaf scars; leaves
9-24 cm long, with wide-spread spines to 5 mm long; sepals
toothed; corolla white, greenish white-yellow.
Lesser Antilles; in Dominica in rainforests and mountain
peaks, 450-1100 m: Boeri Lake (Wilbur 8196), Freshwater