228 PROCEEDINGS OF THE AMERICAN ACADEMY 



acute oi" acuminate, strongly nerved and rigid in fruit. — A. reticulatum, 

 var. /3, Watson, King's Rep. 5. 486. Idaho to "Washington Territory 

 and Oregon (n. 226, Geyer ; n. 546, Hall & Harbour ; n. 386, Howell ; 

 Spalding; Wyeth). 



* * Bulb-coats not fibrous; some of the outer membranous coats in most 

 species marked by a more or less distinct peculiar reticulate venation : 

 leaves several (2 to 4), shorter than or about equalling the scape: spathe 

 2-valved, except in n. 21 : stamens and style exserted only in n. 20 and 21. 



-»- Ovary not crested or obscurely 8-crested : perianth-segments not serrulate. 



++ Scape usually tall (a foot high or more). 



12. A. scaposum, Benth. Outer bulb-scales dark, with coarse 



more or less regular vertically oblong rectilinear reticulation : umbel 



loose, rather few-flowered: perianth-segments white with red midvein, 



lanceolate, acuminate, 3 or 4 lines long. — Watson, King's Rep. 5. 487, 



t. 38, f. 10, 11. W. Texas to S. Arizona and Mexico. This is probably 



identical with the older A. Kunthii, Don (Schcenoprasum lineare, 



HBK.) 



++ ++ Scape low. 



13. A. Douglasii, Hook. Reticulation of bulb-coats not detected : 

 scape 8 or 10 inches high : flowers pale rose-color, 3 or 4 lines long ; 

 segments lanceolate, acuminate, scarcely exceeding the stamens and 

 style : ovary not at all crested. — Oregon (" Blue Mountains, subalpine 

 hill near Kettle Falls," Douglas). A very obscure species, not iden- 

 tified in recent collections. The figure and description in Hook. Fl. 

 Bor.-Am. refer, with the exception of the scape and the details of the 

 flower, to his var. (3, i. e. to A. Tolmiei, Baker. 



14. A. madidum. Bulbs white, bulbiferous at base, without re- 

 ticulation : leaves 2, thick and channelled, 1 ^ to 3 lines broad : scape 

 stout, angled, 4 to 8 inches high : flowers usually many, on pedicels 

 4 to 6 lines long, white or nearly so, 4 lines long ; segments ovate- 

 oblong, acute, a little exceeding the stamens : cells of the ovary with 

 two fleshy ridges at the summit. — Union County, Oregon ; W. C. 

 Cusick, n. 382. In small streams or wet places in high ground. 



15. A. Cusickii. Reticulation of bulb-coats not detected : leaves 

 2, flat, somewhat falcate, 3 lines wide : scape 3 or 4 inches high : 

 flowers rather numerous, on pedicels 6 to 8 lines long, nearly white, 

 4 or 5 lines long ; segments lanceolate, broadly acuminate, nearly 

 twice longer than the stamens and style : ovary-cells shortly apicu- 

 late. — Union County, Oregon; W. C. Cusick, n. 179. 



16. A. collinum, Dougl. in herb. Known to me only from scanty 

 flowers from Kew Herb. Perianth-segments ovate-lanceolate, acute, 



