124 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



cuneate and decurrent at base, crenate ; petioles stout, 8-12 cm. long ; bracts 

 of the scape alternate, tYz-iYz cm. long, 10-18 mm. wide, ovate-acuminate, 

 sessile by a subcordate base, crenate-dentate near the apex ; floral bracts 

 rhomboidal, acuminate, tapering at base to a short petiole which surpasses 

 the pedicels : flowers white, erect on short pedicels in a spike 5 cm. long; 

 calyx of three divisions varying in shape and size in flowers from the same 

 spike, 4 mm. long, orbicular to obovate, entire, toothed or cleft, obtuse or 

 acute, fringed with white hairs less dense and shorter than those on the pre- 

 ceding species ; corolla of two divisions, surpassing the calyx by 2 mm. ; 

 upper part broadly obovate, acute, indistinctly spurred at base, ciliate ; 

 lower variously cleft with two to three laciniate, ciliate divisions ; stamens 

 with orbicular-ovate anthers i mm. broad and filaments inserted at the base 

 of the corolla, surpassing it by 2 mm. ; fruit unknown. 



Collected by the writer in Cumberland Basin, La Plata 

 Mountains, Aug., 1892. It grew in the alpine meadow 

 where moisture was abundant. It is named in honor of 

 Mr. and Mrs. B. W. Ritter of Durango, Colo., to whose 

 kindness I owe the opportunity of visiting these mountains. 



The plate shows the differences in the floral organs of 

 the three species, all drawn to the same scale. 



3. Synthyris reflexa, sp. nov. 



Plate IX, Figs. 30-3^^. 



Glaucous and somewhat viscid ; scape erect, iJ^-2 dm. high, clothed 

 below the spike with broad, foliaceous bracts : leaves radical, 7 cm. long, 

 elliptical-oblong, obtuse, truncate or cuneate at base, finely crenate, thin in 

 texture ; petiole 3-5 cm. long : bracts of the scape alternate, crowded, 2>^ 

 cm. long, 2 cm. wide, sessile by a broad subcordate or truncate base, 

 broadly ovate, acute, entire or serrulate near the apex, diminishing upwards; 

 floral bracts ovate to linear, fringed with long white hairs : flowers greenish 

 white, reflexed on pedicels i mm. long ; calyx of two divisions 5 mm. in 

 diameter, orbicular, fringed like the bracts ; corolla of two parts united at 

 base, the upper broad, somewhat hood-shaped, 5 mm. broad, 8 mm. long, 

 sparingly fringed ; the lower two-cleft 5>2 mm. long, 4 mm. wide, divisions 

 laciniate, 2 mm. long ; stamens two, anthers cordate, with cells not con- 

 fluent, filaments inserted at the base of the corolla, surpassing it by 4 mm. ; 

 style shorter than the filaments, stigma capitate ; fruit unknown. 



Collected by the author in Kendall Basin, in the San 

 Juan Mountains, near Silverton, Aug., 1890. It was quite 

 rare. 



This is the only Synthyris known to have reflexed flowers 

 and two divisions to the calyx. 



