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Flora of the Venezuelan Guayana

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ANNONACEAE

12. PSEUDEPHEDRANTHUS Aristeg., Mem. New York Bot. Gard. 18(2): 43, fig. 10. 1969.

by Julian A. Steyermark

Trees with glabrous stems and leaves. Leaves shiny and midvein raised on upper surface, secondary veins widely spaced and 5--9 on either side of the midvein. Inflorescence axillary, sessile. Pedicels articulate above the basal bract, furnished with a few (ca. 3) bracts below the middle and above the articulation. Flowers bisexual or staminate (plants androdioecious), staminate flowers with a conical, acute receptacle. Sepals 3, valvate; petals 6, subequal, free, imbricately biseriate, sericeous. Stamens numerous (few in bisexual flowers), the anther locules linear, not locellate; outer and middle stamens with the connective ligulate at apex; interior stamens with connective truncate-dilated at apex. Bisexual flowers with numerous carpels; ovule solitary, basal, erect. Monocarps short-stipitate, 1-seeded.

Endemic to the Guayana Shield in southwestern Venezuela and adjacent Brazil; 1 species.

Pseudephedranthus fragrans (R.E. Fr.) Aristeg., Mem. New York Bot. Gard. 18: 43, fig. 10A--P. 1969. ---Ephedranthus fragrans R.E. Fr., Mem. New York Bot. Gard. 9: 327. 1957.

Tree 15 m; leaves elliptic, membranous-chartaceous; flowers white, fragrant; fruit oblong, orange. Evergreen lowland forests, ca. 100--200 m; Amazonas (Piedra Nunca north of Piedra Cocuy). Brazil (Amazonas: base of Serra da Neblina). Fig. 383.

Scientific Comments:
Paul Berry (peberry@facstaff.wisc.edu) or Kay Yatskievych (kay.yatskievych@mobot.org).

 
 
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