Flora of Dominica, Part 2 - Smithsonian Institution Libraries

NumER 77 ASTERACEAE 35
Erect, pubescent herb with alternate, obovate, serrate leaves;
inflorescence terminal, subtended by many bracts, including a
few basal, foliose bracts; flowers all discoid, purple.
South America into Panama, sometimes cultivated and
escaping; new record for Dominica: Delices at base of stony
bank, 300 m (Whitefoord 3679), Roseau in Mrs. Irma Didier’s
garden (Nicolson 4209), sine loc. (Eggers s.n. Apr 1882).
Adjanohoun et al. (198573, pl. 40) reported usage of an
infusion against fever.
Chaptalia Ventenat, nom. cons.
Chaptaalia nutans
Choptalia nufans (Linnaeus) Polakowsky, 1878:582.--Domin,
Simpson in North her. Fl. ser. 2, 1978, 10:6.
Tursilago nutans Linnaeus, 1759a:1214.
193M83.-
Acaulescent herbs; leaves white-floccose beneath, k crenate;
heads radiate, solitary on long peduncle, nodding in bud and
hit but erect at anthesis; involucre multiseriate, bracts
lanceolate, rather long; ray-florets white but turning purplish,
pistillate; disk-florets bilabiate, bisexual; achenes shorter than
whitish pappus.
Florida to Argentina; occasional in Dominica: Baiac road
(Whitefoord 4607), Grand Bay road (Ernst 1613), Morne aux
Diables (Wilbur 8049), Lisdara (Hodge 732), Ridgefield
(Hodge 2127), Roseau along Jacks Walk (Hodge 731),
Soufri5re (Lloyd 419), sine loc. (Eggers s.n. Mar. 1882).
Adjanohoun et al. (198575, pl. 42) reported several
medicinal usages.
Chromolaena A.P. Candolle
1. Leaves entire ................ C. integMolia
1. Leaves serrate or dentate.
2. Leaves conspicuously pubescent, coarsely dentate with
few (20) teeth; plants of midlands to mountain
tops.
3. Leaves sessile, rounded to obtuse at base
.................... C. impetiolaris
3. Leaves petioled, rarely k sessile, tapered at base.
4. Leaves not gland-dotted beneath ..........
.................... C. macrodon
4. Leaves dark (to red) gland-dotted beneath
.................. C. tngonocarpa
Chromolaena impetiolaris
Chromolaena impetiolarir (Grisebach) Nicolson, 1987.
Eypltorium impetwlare Grisebach, 1861:357.--Domin, 193M65.
Glabrous subshrubs; leaves opposite, sessile, elliptical-
oblong to lanceolate, 3-veined, coriaceous, densely glanddotted
beneath, margins cartilaginous, serrated with narrow,
“horn-like” but blunt teeth; inflorescence corymbose, heads
pedicellate; receptacle naked, produced into a short cylinder;
involucre cylindric, with conspicuous “spots”; involucral
bracts many, appressed, unequal in 4-6 series, each 3-5-
veined and with a “spot” near tip, ultimately all deciduous;
corollas tubular, white; anther appendage large; style without
basal node; achene ribbe& carpopodium short; pappus of about
40 capillary bristles.
Endemic to Dominica in opened places at higher elevations:
Freshwater Lake vicinity (Chambers 2572, King 6384, Nicolson
2109), Morne Diablotins (Whitefoord 5321), Rosehill
(Eggers 628), near summit of Trois Pitons (Chambers 2754,
Hodge 1381, Kimber 983). Flowering November-January,
fruiting in February.
Domin (193Od:65) cited the type as Imray 241 from
Couliaboun Mountains (i.e., Morne Anglais).
Chromolaena integrifolia
Chromolaena integrifolia (Sprengel) King & Robinson, 1970b:202.
Eupatorium integrifoliwn Bertero ex Sprengel, 1826. 3:41O.-Stehl6,
1962d3348.
Densely puberulent subshrubs; leaves succulent, entire,
gland-dotted; corollas bluish.
Northern Lesser Antilles along coasts; new for Dominica on
north coast Calibishie (Hodge 3149), Capucin (Whirefoord
5816).
A number of specimens of this species from Guadeloupe and
Martinique were found (US) misidentified as Eupatorium
atriplicifolium Lamarck, a synonym of Chromolaena corymbosu
(Aublet) King & Robinson.
Chromolaena macrodon
Chromolaena macrodon (A.P. Candolle) Nicolson, 1987.
Euprtorium macrodon A.P. Candolle, 1836,5: 145.--Domin, 1930&65.
Glabrous subshrubs; leaves petioled, ovate-elliptic, tapered
to base, 3-veined, not gland-dotted beneath, coriaceous,
margins cartilaginous, serrated with narrow, “horn-like” but
blunt teeth; heads pedicelled but ultimate, heads sometimes k
sessile (ternate).
Endemic (? St. Kitts) to Dominica near summits or on ridges:
Morne Anglais (Hodge 2312), Mome Diablotins (Fishlock 3,
Hodge 2828, Webster 13341, Whitefoord 5729), Mome Plat
Pays (Hodge 1713, Morne Trois Pitons (Chambers 2753).
Flowering in March on ridges, June on summits.
The type (G) reads “Habitat vertices montium in locis
humidis Dominicae” (summits of mountains in humid places of
Dominica). It is suspected that the collection (from L’Hbritier)
was made by de Ponthieu.