Flora of Dominica, Part 2 - Smithsonian Institution Libraries

NUMBER 77 LUBELIACEAE-LORAN~~ACEAE 131
Lake (Chambers 2574, Eggers 693, Ernst 1789, Fosberg
48270, Gillis 8218A, Smith 10282, Stern & Wasshausen 2562,
Webster 13267, Wilbur 74.39, Mome Anglais (Fennah 19,
Hodge 786, 2308, Wilbur 7953), Mome Couronne (Webster
13204), Mome Diablotins (Hodge 2829, Wasshausen &
Ayensu 411, 412, Webster 13356, Whitefoord 5736), Morne
Micotrin (Ernst 1096), Morne Plat Pays (Wilbur 7849), Morne
Trois Pitons (Ernst 2033, Hodge 787, 1408, Nicolson 1813,
Wilbur 8073), Mosquito Mountain (Webster 13545).
Swartz’s type (BM), “Guadeloupe in regione muscosa
montis la Soufrikre copiosa. De Ponthieu,” has only two
anthers tufted. Wimmer’s position that Lobelia stricta Swartz is
a nomen delendum under Lobelia infestu (Grisebach) Urban, a
St. Kitts-Nevis species with five tufted anthers, is untenable.
Sastre (1985167) applied Swartz’s name in the sense of
material in Swartz’s herbarium (with five anthers tufted).
Swartz’s name, being marked with an asterisk in his original
publication, must be typified on the BM material. Swartz’s
introduction explains that he uses the asterisk to denote new
taxa found, through the generosity of Sir Hans Sloane, in the
Sloane Herbarium that he had not previously seen. The material
in his herbarium is probably the Masson collection from St.
Christopher, cited as a second collection under Lobelia stricta
in Solander’s mss. “Florula Indiae Occidentalis,” which is now
missing, perhaps given to Swartz during his 1787 stay to work
with Dryander at Banks’ Museum, and mislabeled as “de
Ponthieu, Guadeloupe.”
LOGANIACEAE
(by R. DeFilipps)
Buddleia davidii Franchet, a flowering shrub, sometimes
called butterfly bush, with leaves white-tomentose beneath, has
been collected in cultivation at Baiac (Whitefoord 5555).
Mitreola petiolata (Gmelin) Torrey & Gray, a neotropical
weed with petiolate, glabrous leaves and distinct styles, has
been collected on Guadeloupe and Martinique.
Spigeila anthelmia
Spigeila anthelmia Linnaeus, 1753: 149.
Annual herb to 5 dm; leaves k sessile, scabrid above,
opposite and connected by a stipular sheath, the uppermost
pairs appearing whorled; flowers whitish to lavender, 5-9 mm
long, in unilateral spikes; sepals unequal; styles 2, united;
capsule tuberculate.
Neotropical weed, in Dominica near sea level, often along
roadsides: Cabrits (Whitefoord 4029)’ Coulibistri (Wilbur
8340)’ L’Anse Noire (Erst 2075), lower Layou Valley (Ernst
1523), Marigot (Hodge 671), Portsmouth (Hodge 670), Roseau
(Hodge 669), Soufriere (Fishlock 20).
LORANTHACEAE
Epiphytic parasites with opposite leaves.
Dr. Delbert Wiens kindly reviewed an early draft the
typescript. Recent workers recognize the viscoid genera
(Phoradendron and Dendrophthora here) as a separate family,
Viscaceae.
1. Flowers conspicuous (corolla 3 cm long or longer)
....................... Psithcanthus
1. Flowers inconspicuous (corolla 4 mm long).
2. Flowers shortly but distinctly pedicelled (racemose);
perianth segments 6, white ....... Dendropemon
2. Flowers sessile or imbedded on the rhachis (spicate);
perianth segments 3, green.
3. Anthers unilocular; leaves 2 cm long (ours) .....
.................... Phoradendron
Dendropemon (Blume) J.A. & J.H. Schultes
Dendropemon caribaeus
Dendropemon caribaeus Krug & Urban in Urban, 1897:27.
Phthirusa caribaea (Krug & Urban) Engler in Engler & Prantl, 1897, Nachtr.,
11-IV( 1):135.
Struthanth caribaeus (Krug & Urban) StehU, 1954a:32.
Inflorescence racemose; petals white.
Puerto Rico and Lesser Antilles; in lowlands of Dominica:
Laudat [?] (Lloyd 205), Layou River mouth (Ernst 1106,1814,
1989), Salisbury (Whitefoord 4522). On Eugenia, Citrus,
Thespesia populnea, and Term’nalia catapa.
This species is often treated under Phthirusa or Struthanthus.
Barlow and Wiens (1973:34) treated Phthirusa and
Dendropemon in a summary comment on Struthanthus. Kuijt
(pers. comm.) said that Dendropemon (flowers in pairs of
monads) is Antillean, Phthirusa (flowers in pairs of triads), and
Struthanthus (flowers in pairs of triads except monads at tip) is
confined to the mainland.
Krug and Urban (in Urban, 1897:28) recognized Dendropemon
caribaeus var. wabyanus with furfuraceous pedicels.
Our material appears to fall there, rather than the typical
variety, but the distinction needs study.
Dendrophthora Eichler
Dendrophthora elliptica var. platyphylla
Dendrophthora elliptica var. platyphylla Krug & Urban in Urban, 189769.
Phordndron myrtiffoidcs sensu Grisebach, 1860:314, as to material from
Dominica, non (Willdenow) Grisebach.
Leaves small (to 2 cm x 1.2 cm), obovate, retuse.
Lesser Antilles and South America; rare in wet areas of
Dominica, 540-900 m: Boiling Lake (Hodge 1946, Nicolson