OP ARTS AND SCIENCES. 479 



of the kindness and hospitality of Mr. and Mrs. Thomas J. Potts of 

 Yzabal. 



Bravoa singuliflora. Stem with a large bulb-like base (IJ 

 inches in diameter), from a short rootstock and a cluster of slender tu- 

 berous roots, 3 feet high : leaves numerous, linear, a foot long or less 

 by 2 to 4 lines broad, with undulate margins, dilated at base ; cauline 

 leaves short and very narrow ; floral bracts subulate to deltoid : flowers 

 solitary (rarely geminate ?) , very shortly pedicellate, greenish white, 

 the tube somewhat purplish, 15 lines long including the ovary ; lobes 

 oblong, 3 or 4 lines long : stamens exserted from the tube, the anthers 

 about equalling the lobes: style included: capsule oblong, 10 lines 

 long : seeds thin. — On shaded slopes of mountains near Chihuahua- 

 ((7. G. Pringle, September, 1886). 



Agave (Manfreda) planifolia. Perennial rootstock a very 

 thick roundish corm, persistent for three or four years, covered with the 

 fibrous remains of the sheaths of dead leaves ; flowering stem 4 or 5 feet 

 high : leaves rather succulent and pliant, flat or nearly so, not spotted, 

 minutely denticulate, the basal (4 or 5) narrowly oblong, acuminate, 

 narrowed to the sheathing base, 8 to 12 inches long by 1 to 2^ broad, 

 the cauline (6 or 8) similar, reduced above to bracts: perianth about 

 9 lines long above the ovary, the segments three or four times longer 

 than the tube : stamens long-exserted : capsule ovate, 8 lines long. — 

 Abundant on warm sandy or gravelly banks near streams in caiions of 

 the Mapula Mountains, Chihuahua (C G. Pringle, 1886). 



Camassia Cusickii. Bulbs clustered (1 to 12), large (1 or 2 inches 

 thick or more), and bearing numerous (8 to 20) large glaucous leaves 

 (1 to 1^ feet long by 6 to 18 lines broad) : stems 2 or 3 feet high; 

 pedicels 6 to 12 lines long or more: flowers large, pale blue, the nar- 

 row segments 3- (rarely 5-) nerved, persistently spz'eading : capsules 

 oblong, abruptly acute, transversely veined, 6 or 8 lines long : seeds 

 obovate, shining. — On slopes of the Eagle Creek Mountains, eastern 

 Oregon, at 4,000 to 6,000 feet altitude ( W. C. Cusick, May and Octo- 

 ber, 1886). Very near C. esculenta in its more essential characters, 

 differing from it in its larger bulb, more numerous leaves, and stouter 

 and more clustered habit, growing on hillsides instead of in wet 

 meadows, and the bulb nauseous, pungent, and inedible. The bulb of 

 C. esculenta is always cooked by the Indians before being eaten, but it 

 is said to be tasteless in its raw state. 



Erythronium Hendersoni. Leaves mottled : peduncle 1-2- 

 flowered: petals recurved-spreading, about 1| inches long, pale pur- 

 ple with a very dark purple base, this purple centre of the flower 



