64 MISSOURI BOTANICAL GARDEN. 
Y. stricta Baker, Gard. Chron. 1870: 923.— Hemsley, Garden. 
8 ; 132. — As to herbarium citations, in part. 
Y. angustifolia stricta Baker, Journ. Linn. Soc. Bot. 18 :227.— As to 
herbarium citations, in part. 
Y. glauca stricta Trelease, Rept. Mo. Bot. Gard. 43206. pl. 22. — 
Coulter, Contr. U. S. Natl. Herb. 2: 437. 
Y. recurvifolia ? Nutt. Trans. Amer. Philos. Soc. 5: 156. 
Aspect and foliage of Y. tenuistyla. Inflorescence about 1 m. high, 
racemose or very rarely with a few branches, glabrous. Flowers with 
mostly greenish-white broad and obtuse segments: style green, usually 
very tumid below. Capsule little flaring, smooth: seeds dull, 7 to 
8X 10 mm. — Plates 30, 31. 83, f. 7. 
From about Catoosa, I. T. (Bush, 1278) and Little 
Rock, Ark. (Engelmann, May 1837) to the vicinity of San 
Antonio, Tex.— Plate 88, f. 2. 
The specific name Arkansana, here used, is applied in 
deference to the prevalent American practice in nomencla- 
ture, Engelmann’s varietal name mollis (1873) having been 
similarly used under Y. gloriosa by Carriére, in 1860. 
33. Inflorescence amply panicled on a long scape. Foliage of the 
preceding or wider. 
Y. Louisianensis Trelease. 
Y. filamentosa Riddell, N. O. Med. & Surg. Journ. 8 : 763. — Rafines- 
que, Fl. Ludovic. 18, —Gray, Manual. [6 ed.]. 524. — Britton, Man- 
ual. 269.—As to the Louisiana citation. 
Y. stricta, Y. stricta elatior, and Y. stricta intermedia Carriétre, Rev. 
Hort. 1859 ; 390, 466. f. 701-2. 
Of the aspect of the preceding, or, when the inner leaves are dilated, 
of Y. jilamentosa media. The flaccid green leaves 10 to exceptionally 
40 mm. wide, white bordered sparingly filiferous. Inflorescence an ex- 
serted glabrous or mostly pubescent panicle. Petals broad to attenuate. 
Style variously tumid and deep green, to pale and oblong. Capsule 
stout and short, angular in developing, as in Y. flaccida: seeds 6 to7 KX 6 
to 10mm. — Plates 32-34. 83, f. 8. 
Louisiana (Alexandria, Ball 558; Minden and Alden 
Bridge, Trelease) to northern Texas (Jefferson, Trelease ; 
Dallas, Reverchon; Texarkana, Trelease) and southeastern 
Indian Territory (Atoka, Butler; Standley, Ferriss; 
Poteau, Trelease). — Plate 92, f. 1. 
Apparently a western derivation of the same stock as the 
