I960 Moldenke, New and Noteworthy Plants 123 tacular bractlets pale-stramineous, obovate, about 2 mm. long and 1 mm. Yd.de, long-acuminate at the «qpex, long-ciliate from the widest part to the apex, otherwise glabrous; staminate florets: sepals 3, pale-stramineous, spatula te, about 1.1 mm. long and 0.3 mm. wide, densely pilose on the back and long-barbate at the rounded apex, united only at the base; petals 3, connate into a stramineous tube about 1.6 mm. long, the free portion short and erect; stamens 3; pistillate florets: sepals 3, white, separate to the base, oblong, about 1.6 mm. long and 0.3 mm. wide, densely white-barbate at the apex, otherwise glabrous; petals 3, exactly similar to the sepals, s eparate to the base; style stramineous, about 1 mm. long, glabrous; ovary subglobose, stramineous, about 0.6 mm. long and wide, 3-sulcate, 3-celled, 3-ovulate. The type of this species was collected by John J, Wxirdack and L. S. Adderley (no^ U2861), who say that the plant was locally abundant in the Sabana Caname, on the left bank of the Cano Caname^ r£o Atabapo, below Guarinumo, at an elevation of 12^ meters, Ama-zonas, Venezuela, on June 8, 19^9, and is deposited in the Britton Herbarium at the New York Botanical Garden. The plant has very great habital resemblance to Syngonanthus savannarum Moldenke, but may be distinguished at once superficially by its aristate involucral bractlets. MATERIALS TOWARD A MONOGRAPH OF THE GENUS AVICBJNIA . I Harold N. Moldenke This is the twenty-second in my series of works of monographic nature on the genera of Verbenaceae , A vie enniaceae , Stilbaceae , and Symphoremaceae . Pluvious genera so treated have all been ver-benaceous: Aegiphila Jacq., Amasonia L. f ., Baillonia Bocq., Bouchea Cham., Casselia Nees & Mart., Castelia Cav., Ghascanum E. Mey., Citharescylxim B. Juss., Comutia Plum., Parodianthus Tron-coso, Petitia Jacq., Petrea Houst., Priva Adans., P seudocarpidiim Millsp., Recordia Moldenke, Rehdera Moldenke, Rhaphithamnus Miers, Svensonia Moldenke, Tectona L. f ., Vitex Toum., and the New World and cultivated members of Callicarpa L. The present work is my first in the A vie enniaceae , and, since the family is monogeneidc, completes the family. Full explanation of the abbreviations employed herein for the names of the 25U herbaria whose material was examined in the pre-paration of this work will be found in Phytologia 5: 15U — 1$9 (19$^) and 6: 2U2 (19^8) with the following additions: Bd -Herbarium Bradeanum, Rio de Janeiro, Brazil Bs = Easier Botanische Gesellschaft, Basel, Switzerland Gl » Museu Goeldi, Bel6n, ParA, Brazil
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