26 BOTANICAL GAZETTE [JANUARY 
first sight C. G. Pringle’s no. 220 from Ciudad Juarez (the former Paso del 
Norte), May 4, 1885 (m., f.; N.), looks very similar to S. exigua, var. steno- 
phylla, but the stigmas are rather long and slender. This form needs special : 
observation. 
Somewhat more different are specimens from Lower California: near the 
Tia Juana, April 6, 1882, M. E. Jones (no. 3730, m., f.; N., W.), the female 
flowers of which have rather long stigmas more or less intermediate between 
those of the flowers of S. exigua and S. sessilifolia Nutt. The ovaries are 
glabrous and have a pedicel of about the same length as the gland. There are 
a few old leaves (apparently of the previous season) which closely resemble 
those of S. sessilifolia, var. leucodendroides (Rowlee) Schn., nov. comb. 
(S. macrostachya, var. leucodendroides Rowlee in Bull. Torr. Bot. Club 27: 250. 
pl. 9. fig. 6. 1900), the most southern form of sessilifolia Nutt. sensu lato. 
There may be hybrids between this variety and exigua in southern California 
and in the adjacent parts of Lower California where var. leucodendroides is 
likely alsoto occur. JoNEs’s specimens represent the early flowering form with 
rather shortly peduncled aments. ‘“‘The peculiar swelling just below the 
stigma,’ which, according to RYDBERG, is a main feature of his S. stenophylla, 
may be observed in almost every form of exigua, longifolia, or other species of 
this section. The form collected by Jones may be identical with that of 
LeRoy Abrams on the Tia Juana River in San Diego County, California, 
May 14, 1903 (no. 3485, f., fr.; G.), which I can hardly distinguish from typical 
oe 
ther doubtful f from Chihuahua, Puerta de St. Diego, 
alt. an m., April 13, 1891, C. V. Hartman (no. 625, m.; “8-12 ft. high”), 
which has bien distributed as S. taxifolia. It is a very early flowering form 
with small subsessile ovoid aments (6-12 mm. long) and very narrow short 
young leaves (up to12 byo.5mm.). According to the globular anthers it may 
be an unusually early flowering taxifolia; on the other hand one might regard 
it as an abnormal state of exigua stenophylla. 
11. S. LONGIFOLIA, var. ANGUSTISSIMA And. in Ofy. K. Vet.-Ak. 
Forh. 15:116. 1858, excl. specim. Wrightii no. 1875; in Proc. 
Amer. Akad: 4:56 (Sal. Bor. Am. 10). 1858; in Walp., Ann. Bot. 
5:746. 1858.—S. longifolia *** opaca And. in K. Sv. Vet.-Akad. 
Handi. 6:55 (Mon. Salic.). 1867, quoad specim. Berlandierii 
no. 2341; S. longifolia y argyrophylla And. in D.C Prodr. 167:214. 
1868, quoad specim. Berlandierii no. 2341 (sphalm. 2371); Coulter 
in Contrib. U.S. Nat. Herb. 2:419 (Man. Phan. W. Texas). 18094, 
‘prob, pro parte maxima; S. Thurberi Rowlee in Bull. Torr. Bot. 
Club 27:252. 1900; Blankinship in Rep. Mo. Bot. Gard. 18:194. 
1907. 
