Comprehensive Description

provided by North American Flora
Polygala cowellii (Britton) Blake, Contr. Gray Herb. 47: 10. 1916.
Phlebotaenia Cowellii Britton, Torreya 7: 38. 1907. Phlebolaenia portoricensis Urban, Symb. Ant. 5: 382. 1908.
Tree up to 10 m. high; branches sparsely appressed-pubescent, at length glabrate; leaves oblong to elliptic, 8-12.5 cm. long, 3.2-6.9 cm. wide, cuneate to rounded at each end, or abruptly pointed with obtuse apex, glabrous or with a few hairs along midvein; petioles 5-7 mm. long; racemes 2.5 cm. long, subsessile on leafless branches, 6-13-flowered, their axes like the pedicels (4-9 mm. long) densely spreading-puberulous; flowers purple; sepals broadly elliptic, rounded, purplish-green, ciliate, the upper 4 mm. long, the lower 2.5 mm. long; wings elliptic-obovate, obtuse, short -clawed, 14.5 mm. long, 9 mm. wide; keel with two rotund lateral folds, 14 mm. long; capsule suborbicular or semi-orbicular, 3.8 cm. long, 2.6-3.6 cm. wide, membranous, glabrous, very broadly winged on both cells or one wing sometimes greatly reduced, the wings many-nerved, somewhat reticulate, the seminiferous cells about 9 mm. long; one ovule usually abortive; seed obovoid, somewhat compressed, densely rufiduloussilky-pilose, 8 mm. long; aril none.
Type locality: Coamo Springs, Porto Rico. Distribution: Porto Rico.
bibliographic citation
John Kunkel Small, Lenda Tracy Hanks, Nathaniel Lord Britton. 1907. GERANIALES, GERANIACEAE, OXALIDACEAE, LINACEAE, ERYTHROXYLACEAE. North American flora. vol 25(1). New York Botanical Garden, New York, NY
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