52 MISSOURI BOTANICAL, GARDEN. 



Y. flaccida lineata Trelease. 



A garden sport, apparently of var. glaucescens, but in habit more resem- 

 bling T. filamentosa media, having the young leaves striped with dingy or 

 yellowish white, the variegation soon fading for the most part. 



Cultivated at the Missouri Botanical Garden and said to 

 have come from Haage & Schmidt in 1881. Doubtless it 

 is this by which the variegated form of Y. filamentosa 

 proper is represented in many gardens. 



Y. flaccida exigua (Baker) Trelease. 



Y. exigua Baker, Ref. Bot. 5. pi- 314. (1872). Journ. Linn. Soc. Bot. 

 18 : 223. Engelmann, Trans. Acad. St. Louis. 3 : 43. 



A garden form of var. glaucescens with the leaves without marginal 

 threads. 



Y. flaccida grandiflora (Baker) Trelease. 



Y. filamentosa grandiflora Baker, Ref . Bot. 5. pi. 325. (1872) 

 Y. filamentosa maxima Baker, Journ. Linn. Soc. Bot. 18:227. (1880). 

 Y. filamentosa Garden. 1:152./. 12 1 72. /. Gartenflora. 24:372. 

 f. Wiener 111. Gart.-Zeit. 13: 119. /. Step, Favourite Flowers. 

 4. pi. 272. 



Scarcely more than a large sometimes glabrous form of var. glauces- 

 cens, in aspect resembling Y. filamentosa bracteata. 



Y. flaccida Integra Trelease. 



Y. glauca Sims, Bot. Mag. 53. pi. 2662. (1826). Regel, Garten- 

 flora. 8 : 36. Bommer, Journ. d'Hort. Prat. 1859 : 43. Lemaire, 

 111. Hort. 13 : 97. Engelmann, Trans. Acad. St. Louis. 3 : 43, 

 53. Baker, Gard. Chron. 1870 : 1122. Journ. Linn. Soc. Bot. 18 : 

 223. 



Scarcely more than a narrow-leaved glabrous form of f . exigua. 



The name employed by Sims is antedated thirteen years 

 by Y. glauca Nutt. 



The filiferous-leaved " bear grasses " of the southeastern 

 Atlantic States are not easily disposed of in an attempt to 

 monograph the genus to which they belong, partly because 

 they are more commonly seen in cultivation than in a state 

 of nature, partly because of their interblending characters, 



