1923] Brackett,—American Species of Hypoxis 123 
K. Seeds minutely muricate, beak nearly obsolete; 
basal sheaths membranous, often thick and dark, 
rarely becoming fibrillous; scapes 1- few-flowered . .8. H. micrantha. 
K. Seeds more coarsely muricate; beak well developed L. 
L. Beak and hilum set in a lustrous, black, wedge- 
shaped spot; murications stiff, conical and sharp- 
pointed; basal sheaths becoming quite fibrous. 
9. H. potosina. 
L. Beak and hilum not set in a lustrous, wedge-shaped 
spot M. 
M. Seeds covered with low, blunt, corrugated 
pebbling; basal sheaths membranaceous, 
generally becoming fibrillous..............10. H. Wrightii. 
M. Seeds covered with spine-like or subulate pro- 
cesses N. 
N. Outer coat of loose texture, wrinkled and 
pinched into scarcely confluent, little peaks, 
persistent; basal sheaths becoming fibrous. 
11. H. rugosperma. 
N. Outer coat of firmer texture, covered with 
sharp or obtuse spine-like processes O. 
O. Basal sheaths disintegrating into dense 
fibers; seeds with firm conical, obtuse, 
scarcely confluent processes............ 12. H. fibrata. 
O. Basal sheaths becoming somewhat fibril- 
lous; seeds darker, with firm, sharp- 
pointed, rather crowded processes, the 
sides of which seem to be grooved or 
+ ere e e ae ee a S S 13. H. humilis. 
J. Seeds generally showing much of the black under coat P. 
P. Murications rather sharp, fine and closely crowded, 
the outer seed-coat: exfoliating irregularly, especi- 
ally the brown tips of the murications adhering to 
the low, flat markings of the inner coat; sheaths 
rarely becoming fibrillous...................... 14. H. mexicana. 
P. Murications very low and broad, the remnants of the 
outer coat adhering irregularly, especially around 
the bases of the low, black processes; seeds mostly 
black; sheaths scarcely fibrillous.......... 15. H. catamarcensis. 
e 
1. H. JUNCEA Smith. Corm elongate, 5-12 mm. thick, covered 
with membranous or slightly fibrillous, brown sheaths: leaves filiform, 
canaliculate or involute, 0.4-0.8 mm. broad, up to 3.5 dm. long: ped- 
uncles filiform, loosely pilose or glabrate, 0.5-2 dm. long, 1—2-flowered: 
ovary and capsule densely pilose: perianth with lanceolate to narrowly 
elliptic, acutish segments, 0.8-1.5 cm. long: capsule ellipsoid, 4—6 
mm. long: seeds about 1 mm. in diameter, black, lustrous, the outer 
coat covered with flattened or truncated pebbling.—Spicil. ii. 15, t. 
16 (1792): Willd. Spec. ii. 110 (1799): Aiton fil. Hort. Kew. ed. 2: 
ii. 255, (1811): Pursh, Fl. Sept. Amer. i. 224 (1814): Roem. & 
Schultes, Syst. Veg. vii. 761 (1830). H. filifolia Elliott, Sketch, 
397 (1817).—Pine barrens of Florida, locally north to South Carolina. 
Elliott in his Botany of South Carolina said he had not seen any 
species of Hypoxis that was strictly one-flowered although he accorded 
