Flora of Dominica, Part 2 - Smithsonian Institution Libraries

38 ASTERACEA~ SMITHSONIAN CONTRIBUTIONS TO BOTANY
Smaller, linear-leaved plants with purple-tipped involucral
bracts can be identified as Conyza canadensis var. pusilla
(Nuttall) Cronquist. One Dominican specimen has rather
broadly lanceolate leaves without purple-tipped bracts, Chambers
2742B. It was collected at the same time (same
population?) as Chambers 2742A.
Critonia Browne
Critonia macropoda
Critonia mropoda A.P. Candolle, 1836,5:140.
Eupntoriwn macropus Urban, 1899, 1:460, non Enpatoriwn maeropodm
Baker.
Eupntoriwn magdalenae Stehle, 1%2d:349.
Critonia donrinicensis King & Robinson, 1972a:405.
Glabrous shrubs to 2 m; leaves opposite on 1.5-2.0 cm
petioles, pellucid-punctate, long-attenuate at apex, narrowly
cuneate at base, margin remotely sermlate, pinnately veined;
inflorescence corymbose, heads with 5 tubular florets in 3-6
fascicles; involucral bracts in 4-5-series, highly unequal,
interior ones quickly deciduous; anther appendages about as
long as broad; style base not enlarged, style appendages linear;
achenes broadly ribbed, narrowed at base, crowned by a pappus
of -35 capillary bristles.
Martinique and Dominica: Fond Baron Estate along Grand
Bay Road (King 6301). Past anthesis in December.
The type material of Critonia macropoda A.P. Candolle,
Sieber 184, was supposedly collected in 1826 from Trinidad.
Sieber’s collectors (Kohaut in Martinique 1818-1821 and
Wrbna in Trinidad 1822) were not in the West Indies in 1826
(cf. Urban, 1902,3:14-158). Urban (1899, 1:460) suspected it
(from the year) was from Martinique. Cheesman (in R.O.
Williams, 1940, 2(2):70) treated it as a doubtful record for
Trinidad.
De Candolle’s species was renamed as Eupatorium macropus
Urban (l.c.), indicating possible affinity of a defective
Eggers specimen from Dominica. Urban was clear that he was
providing a new epithet (macropus) in Eupatorium to avoid
homonymy with earlier E. macropodum Baker but, under Art.
64.3, Ex. 8 (ICBN) “heteropus and heteropodus,” the epithets
are treated as homonyms. Stehle (1.c.) created yet another name,
E. magdalenae Stehle (with its own designated type), including
the type of De Candolle’s name.
Eclipta Linnaeus, nom. cons.
Eclipta prostrata
Eclipta prostrata (Linnaeus) Linnaeus, 1771:286.-Koyama & Boufford,
1981:505.
Verbesina prostratu Linnaeus, 1753:902.
Verbesina alh Linnaeus, 1753:902.
Bellis ramasa Jacquin, 1760:28.
Eclipta erecta Linnaeus. 1771:286. nom. illeg. [incl. type of Verbesina alba
Linnaeus. 17531.
Eclipta punctata Linnaeus, 1771:286, nom. illeg. [incl. type of Bellis rwsa
Jacquin, 17601.
Eclipta alh (Linnaeus) Hasskarl, 1848:528.--Domin, 1930d:73.1 m; leaves alternate, crenate-serrate,
elliptic to obovate, narrowed to a winged petiole; glomerules
subtended by about 3 basally overlapping bracts; pappus of 5
bristles.
Neoiropics but now pantropically distributed; weed of
disturbed places on Dominica: Clarke Hall (Chambers 2710),