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230 Bickxell: Studies in Sisyrinchium 



Soutlicastcrn Louisiana : Hammond, Tangipahoa Co.,' Lewcna 

 Gallup, April 4, 1889, " pine lands," in full flower. In U. S. Nat. 

 Herb. 



Sisyrinchium sagittiferum 



F 



Thinly tufted and slightly fibrillose at base, apparently not 

 glaucous, drying dark, 10-15 cm. high. Leaves about equaling 

 the stems .5-1.5 mm. wide, thin, .striate-nerved, acuminate, the edges 

 serrulate to smooth: stems very slender, .5-.75 mm. wide, margined 

 to narrowly winged, the wings distinctly striate, mostl)' denticulate- 

 roughened or above cv^en papillose -aculeolate on the edges ; spathes 

 small, erect, terminating the stems and four or five times as broad, 

 subequal or the outer one prolonged : outer bract 11-27 mm. long, 

 acuminate or attenuate, sometimes surpassing the inner bract i 5 mm.,. 



the white-hyaline margins only slightly united at base ; inner bract 

 10-12 mm. long, the margins broadly white-hyaline, the apex ab- 

 ruptly acute or broadly scarious and truncate or emarginate with 

 excurrent midvein : interior scales equaling the inner bract or nearly 

 so : flowers 3-7, small, on almost hair-like flexuously exserted 

 pedicels about 1 5 mm. long : perianth apparently about 8 mm. 

 long, color faded out; stamineal column 4 mm. high : capsules un- 

 developed. 



Texas, i\Iay, 1839, Dr. Ridell. In Herb. Dr. Chas. Mohr. 



Sisyrinchium scabrellum 



Cacspitosc in close erect tufts, arising from a dense cluster of 

 fibrous roots, 25-40 cm. high, slightly fibrillose at base ; dull pale 

 green and glaucescent, the spathes often yellowish green and pur- 

 plish, the rather long sheathing bases of the leaves purpHsh-tingcd. 

 Leaves stiffly erect, three quarters the height of the stem, very 

 narrow, 1-2 mm. wide, tapering and cuspidate-acute, closely striate, 

 scabrous all over or even canescently incrustate with minute setu- 

 lose papillae, less so or quite smooth above, sometimes nearly 

 smooth throughout : stems simple, stiff and slender, 1-2 mm. wide, 

 flattened, sometimes glabrate but usually scabrous, at least below^ 

 sometimes equally so w^ith the leaves, the finely-striate wing-mar- 

 gins roughened on the edges or even minutely hispidulous-aculeo- 

 late : spathes geminate at the top of the stem (in one instance three 

 together) sessile or the outer one short-stipitate, the bracts herba- 

 ceous and striate, encrusted with minute whitish points or almost his- 

 pidulous-scabrous ; primary bract stiff and erect, much elongated, 

 3.5-1 1.5 cm. long, slenderly attenuate, or broadened and foliaceous 

 above the spathe, usually smooth or nearly so above ; inferior outer 

 bract attenuate, often slenderly prolonged, 1.2-3.8 cm. long, sur- 

 passing the inner bracts, w^hich are less herbaceous, scarious-mar- 



