Monographs Details: Styrax guanayana var. yutajensis Maguire
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part X. Mem. New York Bot. Gard. 29: 1-288.
Description:Latin Diagnosis - Folia anguste vel moderate elliptica, vulgo 2-3 cm lata, 4-6 cm longa; inflorescentiis vulgo 4-8-floribus; lobis corollarum ca 2 mm latis, intus omnibus brevivillosis; ovulis paucis, seminibus 1(-2).

Distribution and Ecology - Distribution. VENEZUELA. Territorio Amazonas: Cerro Yutaje, Rfo Manapiare, shrub to 2 m, middle section, main branch, left-hand fork Cano Yutaje, 1300-1400 m alt, 15 Feb 1953, Maguire & Maguire 34241 A; shrub or small tree, rocky slopes and south rim, 1600 m alt, 15 Feb 1953, 35260; shrub 3 m high, flowers white, cliffs to summit, 2000-2100 m alt, 17-19 Feb 1953, 35291, 35394 (holotype NY) .

Discussion:Type. Small tree, corolla white flushed pink, fragrant, frequent, northwest ridge above Camp Yutaje at 1400 m alt, Cerro Yutaje, Territorio Amazonas, Venezuela, 23 Feb 1953, Bassett Maguire & Celia K. Maguire 25394 (holotype NY). The two mesas, Guanay and Yutaje, are adjacent. It is not surprising that the species should occur on both mountains. But that the respective populations should show consistent readily recognized minor differences would indicate little genetic exchange between the two varieties.