* 

 Allium. LILIACE2E. 149 



7. A. attenuifolium, Kell. Bulb-coats (often reddish) with a delicate trans- 

 versely sinuate or serrate reticulation, the vertical lines especially also minutely sinu- 

 ous : scape slender, 6 to 15 inches high, somewhat leafy : leaves narrow and 

 becoming convolute-filiform above the sheathing base : bracts 2, short, abruptly 

 acute : umbel erect, usually dense ; pedicels 3 to 8 lines long : flowers white or 

 nearly so, the oblong-lanceolate acuminate segments 3 or 4 lines long, more or less 

 exceeding the stamens and style. Proc. Calif. Acad. ii. 110, fig. 34; Watson, 1. c. 

 t. 37, fig. 8, 9 (flower and reticulation). A. reticulatum, Benth. PI. Hartw. 339. 

 A. amplectens, Torr. Pacif. R. Rep. iv. 148. A. acuminatum, var. gracile, Wood, 

 1. c. 170. A. occidental, Gray, Proc. Amer. Acad. vii. 390. 



Frequent in the Sierra Nevada from Mariposa County to Oregon (Hall), and also in the Coast 

 Ranges from San Francisco northward. The reticulation is usually more regularly sinuate or 

 serrate than is represented in the figure in Bot. King Exp., often approaching that of A. serra- 

 turn, from which species this may be distinguished by the lax whitish flowers and obtuser bracts. 

 Dr. Torrey's name is the earlier, but is applicable only to the undeveloped state of the plant 

 when, as in other species, the umbel is enclosed in the spathe. 



++ ++ Scape low : perianth rose-colored, not becoming lax. 

 = Filaments more or less deltoid above the discoid adnate base. 



8. A. serratum, Watson. With the habit of A. acuminatum : bulb-coats with 

 a distinct close horizontally serrate denticulation : bracts narrowly acuminate : peri- 

 anth-segments broadly ovate-lanceolate, 4 to 6 lines long, acute or somewhat acumi- 

 nate, nearly straight and rather rigid, the inner narrower, somewhat shorter and 

 rarely serrulate : filaments all with a narrowly deltoid base : crests very narrow, 

 central. Bot. King Exp. 487, t. 37, fig. 4 (reticulation). A. acuminatum and 

 falci folium, Torr. Pacif. R. Rep. iv. 148, mainly. 



In the Coast Ranges, from Marin County southward, and in the foothills of the Sierra Nevada ; 

 apparently also from San Diego, on gravelly hills, Cooper ; April to June. A common form has 

 rather close umbels, the small flowers (4 lines long) on pedicels a half inch long or less. The 

 dried outer bulb-coats are readily fissile along the transverse lines of reticulation. 



9. A bisceptrum, Watson. Bulb-coats light-colored, with an indistinct some- 

 what quadrilateral reticulation, the cells under a strong power showing an exceed- 

 ingly sinuous outline especially along the vertical lines : scapes 4 to 10 inches high, 

 often in pairs, rarely compressed above or angled : leaves 1 to 3 lines broad, or more : 

 pedicels 15 to 40 : flowers deep rose-color to nearly white, the ovate-lanceolate acute 

 or acuminate segments 3 or 4 lines long, erect, slightly exceeding the stamens : 

 crests thin, conspicuous. Bot. King Exp. 351, t. 37, fig. 1-3. A. falcifolium, 

 Torr. 1. c., in part. A. Douglasii, Wood, 1. c., in part. 



A rather common species in the mountains from the Sierra Nevada to Utah. 



10. A. lacunosum, Watson. Bulb-coats light-colored, thick and distinctly 

 pitted by the quadrate or transversely oblong reticulation, the outlines of the cells 

 very minutely sinuous : scape 3 to 6 inches high : flowers (5 to 20) on pedicels 3 to 

 5 lines long, the oblong-lanceolate acuminate segments 3 or 4 lines long, a little ex- 

 ceeding the stamens : filaments narrowly deltoid at base : ovary-cells with an obtuse 

 thickened ridge toward the summit on each side. Proc. Amer. Acad. xiv. 231. 



On Mariposa Peak, Santa Clara County (Brewer, n. 1284). 



= = Filaments filiform : crests conspicuous. 



11. A. campanulatum, Watson, 1. c. Bulb-coats with a very minute and 

 extremely sinuate reticulation : scape 4 to 10 inches high : umbel erect or somewhat 

 nodding, many-flowered, the slender pedicels 6 to 15 lines long : flowers light rose- 

 color, the thin spreading broadly ovate-lanceolate acute or abruptly and shortly 

 acuminate segments 3 or 4 lines long, a third longer than the stamens : ovary dis- 

 tinctlv crested. 



