Retiniphyllum laxiflorum var. brasiliense Steyerm.
-
Authority
Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
-
Family
Rubiaceae
-
Scientific Name
-
Type
Type. Gorge of Zesuserra, Serra Sincora, Estado Bahia, Brazil, at alt. 1000 m, 9 Oct 1942, B. A. Krukoff 3 (holotype NY).
-
Description
Latin Diagnosis - A var. laxiflorum differt lobis corollae 10-10.5 mm longis atque venulis subtus inaequaliter prominulis, rete magis laxiori majorique.
-
Discussion
The variation of the length of the corolla-lobes in R. laxiflorum breaks into a measureable pattern, as given in the key to the varieties, although there is some intergradation. While most of the material of var. laxiflorum has the apices of the leaf-blades rounded to obtuse, some of the specimens have subacute apices. There is also some variation in pubescence of the style, length of the filaments, and size of the fruits, but these cannot be correlated with other differences.