Monographs Details: Chomelia spinosa Jacq.
Authority: Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.
Family:Rubiaceae
Scientific Name:Chomelia spinosa Jacq.
Description:Distribution and Ecology - Northeastern Colombia and northern Venezuela east to Estado Aragua at elevations near sea level to 800 m. COLOMBIA. Magdalena: foothills of the Sierra de Perija, Manaure, marginal forest of Rio Manaure, Cuatrecasas A Romero Castaneda 24974; Santa Marta, Banda, H. H. Smith 392 (type of C. longicaudata); Bolivar: Torrecillo, near Turbaco, Killip & Smith 14394; Atlan-tico: Barranquilla, Br. Elias 1093; Usiacuri, Barranquilla and vicinity, Br. Elias 270; near Usiacuri, Dugand 889.VENEZUELA. Trujillo: Valera, Pittier 10772; Estado Lara: Rio Sarare, Saer 521; Portuguesa: Rio Guanare, Lasser & Adams 4569; Guarico: La Pascua, Tamayo 4157; alrededores edificios Estacion Biologica de los Llanos, Calabozo, Aristcguieta 4279; Yaracuy: cerca de San Felipe, Aristeguieta A Pannier 1801; Aragua: El Limon, Williams 10527, 11061.

Discussion:

Anisomeris spinosa (Jacq.) Schum. in Engler & Prantl, Nat. Pflanzenf. 4(4): 98. 1891, non Anisomeris spinosa Presl, 1833.

Chomelia longicaudata Rusby, Bull. Torrcy Club 52: 139. 1925.

Type. “In sylvaticis ad pedem montis de la Popa”, Colombia, Jacquin.

The specimen, Br. Elias 1093, collected at Barranquilla, Colombia, is near the type locality of this species.

In attempting to explain the differences existing between Chomelia and Anisomeris, Rusby (Bull. Torrey Club 52: 137-8. 1925) completely confused the bibliographical citations and references to the illustrations concerning the presence of dorsal horns of the corolla-lobes and sagittate anthers of Chomelia. In Jacquin’s pl. 13 of his Sel. Stirp. Am., there is no drawing showing any anther, whereas Rusby states that this character is “perfectly displayed in Jacquin’s picture, though scarcely referred to in his description,” and later Rusby states that “Jacquin’s figure shows strongly sagittate anthers, with the basal lobes acuminate.” At the same time Rusby states that “Presl’s figure of Anisomeris does not show the anthers.” Actually, pl. 54 of Presl’s Symbolae Botanicae does show anthers with a sagittate base. Apparently, Rusby reversed the two plates in his references, and this led to further confusion in an interpretation and proper understanding of the significant differences supposed to exist among the first species described under each of the two genera, ie. Chomelia spinosa Jacq. on the one hand and Anisomeris spinosa Presl on the other hand. Anisomeris spinosa Presl, originally based upon specimens collected by Lhotskv from Bahia, Brazil, is an entirely different taxon from Chomelia spinosa Jacq., and must be called C. anisomeris Mull.-Arg., as indicated by Schumann (Mart. Fl. Brasil 6(5): 30 1881).

I agree with Standley’s determination of Smith 392 from Colombia (type of C. longicaudata) as Chomelia spinosa. Both taxa show the same type of recurved short, triangular-lanceolate calyx-lobes, many-flowered cymes, the same type of corolla and leaf-shape, and the same type of pubescence on the upper leaf-surface with tertiary transversely reticulate pilose venation on the lower surface.

Distribution:Colombia South America| Venezuela South America|