Hoffmannia piratarum Standl.

Hoffmannia piratarum Standley, Jour. Wash. Acad. 18: 180
1928. A shrub, the young branchlets stout, obtusely tetragonous, glabrous, the internodes 1.5-3 cm. long; stipules caducous; leaves opposite, membranaceous, the slender petioles 2.5-4.5 cm. long, glabrate; leaf-blades lance-oblong, 10-20 cm. long, 5-6 cm. wide, long-acuminate, with narrow, long-attenuate, often falcate tip, deep-green and glabrous above, paler beneath, when very young sparsely short-villous with ferruginous hairs but soon glabrate, the costa prominent, rather stout, the lateral nerves 8 or 9 pairs, very slender, strongly ascending, arcuate, irregularly anastomosing close to the margin; cymes axillary, solitary or fasciculate, dense, few-flowered, 3 cm. long or shorter, the peduncles 2.5 cm. long or less, glabrous or nearly so, the bracts caducous, the pedicels 2-5 mm. long, usually sparsely short-villous; hypanthium 3 mm. long, glabrous or sparsely short-villous; calyx-lobes 4, triangular-oblong, 2-3 mm. long, acute, villous-ciliate with short hairs; corolla 1 cm. long, in bud oblong, obtuse, glabrous or with a few short hairs at the apex, the tube obconic, 2 mm. wide at base, 5 mm. wide in the throat, the 4 lobes oblong-triangular, slightly shorter than the tube ; fruit subglobose, 2-celled, 6 mm. long, glabrous; seeds minute, subglobose, dark-brown, coarsely and deeply foveolate.
Type locality: In wet forest in the Wafer Valley, Cocos Island, Costa Rica, altitude 200 meters or less.
Distribution: Known only from the type locality.

Hoffmannia piratarum là một loài thực vật có hoa trong họ Thiến thảo. Loài này được Standl. mô tả khoa học đầu tiên năm 1928.