Bickxell : Species of the Genus Hydastvlus 383 



Arizona: San Francisco mountain, Aug. 18, 1889, fruit and 





last flowers, F. H. Knowlton ; Aug. 4, 1898, 9000-10,000 ft. in 

 meadows, Dr. D. T. MacDougal ; Rincon Mts., 7500ft., 1891, G. 

 C. Neally; Harts Little Spring, July 14, 1892, full flower, E. O. 

 Wooton ; J. W. Tourney. 



Mexico: Chihuahua, Sierre Madre, 7500 ft., July 18, 1899, 

 full flower ; communicated by Prof. E. O. Wooton. 



The aspect of this plant is nearest that of H. Elmeri but it is 

 more tufted and leafy with rather broader stem but narrower leaves, 

 rather more prolonged and narrower outer bract, much more 

 exserted pedicels apparently also with less closely and distinctly 

 lineate perianth segments and somewhat shorter anthers. 



Hydastylus Schaffneri (Watson) 



Sisyrinchium Schaffneri Watson, Proc. Am. Acad. 18 : 160. 



1883. 



Low, in erect or somewhat depressed leafy tufts, 4-10 cm. 

 high, from short rootstocks bearing pale and apparently soft and 

 somewhat thickened simple roots, dull green, discoloring when 

 dry. Leaves equaling the stems or shorter, very narrow, 0.5- 

 1.5 mm. wide, rather abruptly membranously expanded to a rela- 

 tively long conduplicate base, narrowed to a very obtuse sub-car- 

 tilaginous tip, apparently thickish, the rather obscure fine nerves 

 becoming somewhat prominent in drying, the intervals minutely 

 cross-rugulose or even subscabrellous, the edges smooth or nearly 

 so : stems erect or spreading, narrowly wing-margined, .05—1 mm. 

 wide, rugulose like the leaves and smooth edged or nearly so : 

 spathes mostly deflected, small, 10—15 mm. long, 1.5-2 mm. wide, 

 the bracts subequal or usually the outer one slightly the longer, 



rugulose, the outer one attenuate to an obtuse tip or sometimes 

 more abruptly narrowed, united-clasping for 3—5 mm., the margins 

 below narrowly hyaline : inner bract less narrowed, scarious ob- 

 tuse at apex : interior scales subequal with the bracts : flowers 

 few, 3-5, on slenderly exserted, erect or sub-spreading pedicels 

 15-23 mm. long, exserted 5-8 mm.: perianth yellow, distinctly 

 lineate, about 6-8 mm. long: anthers 2.5-3 mm. long. 



Central Mexico, San Luis Potosi, 6000-8000 ft. altitude, no. 

 881, C. C. Parry and Ed. Palmer, 1878, no. 527, Shaffner. 



I have examined three sheets of this type material, two of no. 

 881. It does not appear that the plant has since been collected. 



