Monographs Details: Phthirusa myrsinites var. savannarum (Maguire) Rizzini
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part X. Mem. New York Bot. Gard. 29: 1-288.
Description:Distribution and Ecology - VENEZUELA. Left bank of Rio Casiquiare, 300 m below the mouth of Rio Pacimoni, alt 110 m, Amazonas, 19 Apr 1953, B. Maguire & Wurdack 35725; Laja Arapacua, Rio Pacimoni, alt 110 m, Amazonas, 6 Apr 1953, 34876. SURINAM. Tafelberg; 565 m, 12 Sep 1944, B. Maguire 24702.

Discussion:Phthirusa myrsinites var savannarum (Maguire) Rizzini, Flora Venez. 1978. Phthirusa savannarum Maguire, Bull. Torrey Club 75: 302. 1948. This variety distinguished from the former one only by its leaves definitely ovate-cordate. The perigonium, the stamens, the stomata, and leaf color are absolutely identical in both taxa; and even most important, the adult berries show the peculiar bloom, already mentioned, being white pruinose. Thus, it seemed desirable to reduce P. savannarum to varietal rank under the rather dispersed P. myrsinites. It is to be noted that the specimen numbered 34876 displays some leaves that instead of being ovate are oblong, and a few of them even have entire base. This specimen, consequently, is transitional between the two varieties, suggesting that there are not two species in the case. See Flora de Venezuela, Loranthaceae, 1978.
Distribution:Venezuela South America|