Monographs Details: Psychotria rosea var. trichophora Steyerm.
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Description:Latin Diagnosis - A var rosea ramis pedunculisque hirtellis recedit; bracteis involucralibus extimis ubique hirsutulis; stipularum vaginis extus magis hirsutulis; corolla 10-15 mm longa; foliorum nervis lateralibus utroque latere paucioribus 8-14.

Discussion:

This variety has been confused with P. bracteocardia (DC.) M.-Arg. (P. pubescens) because of the pubescent peduncles and uppermost stem internodes, but is immediately distinguished from that species by the much longer corollas. The lateral nerves vary from 11-14 on each side in the type specimen of Haught 2190 to 9-10 on the Lawrance 533 specimen and 8-11 on the other specimens cited. The bracteoles subtending the flowers are much longer and broader (11 × 4 mm) as compared with those of P. bracteocardia (6-7 × 1-1.5 mm).

From the allied P. glabrescens, P. rosea differs in the glabrous or glabrate inner surface of the bracts and bracteoles or with only a few setulose or strigillose hairs, glabrous non-ciliate calyx lobes, conspicuous intercalycine, entire, elongated appendage present regularly in the sinus of each calyx lobe, pubescent upper outer surface of the corolla tube with dense pubescence on the outer surface of the corolla lobe, glabrous peduncle, long-attenuate or caudate-tipped outermost involucral bracts, more setulose or hirsutulous pubescence on the outer surface of the bracts and bracteoles.