NO. 5 NEW SELAGINELLAS — MAXON 9 



California : Surprise Canyon, Panamint Mountains, Inyo County, 

 alt. 1,400 meters, April 14, 1891, Coville & Funston 628. Vicinity 

 of Bonanza King Mine, east slope of Providence Mountains, Mojave 

 Desert, alt. 960 meters, May 1 1-24, 1920, Muns, Johnston & Harwood 

 4226. 



The relationship of Selaginella leucobryoides is difficult to deter- 

 mine, since the plant differs not only in megaspores but in most 

 foliage characters from all other species of the Pacific Coast region. 

 The most strilcing characteristics are the extremely short, pure white 

 but opaque seta of the leaves and the condensed, rosette-Hke arrange- 

 ment of the very short branches. In habit and color there is a strong 

 suggestion of the tufted growth of some of the smaller species of 

 L eucobryum. 



The Panamint Mountains plant collected by Coville and Funston 

 (No. 628) was mentioned as a critical form by Underwood in his 

 initial work upon the United States species allied to 5". rupestris 

 It is clearly a reduced state of the present species, differing from the 

 type only in its lesser size. The leaves are only 1.65 to 2 mm. long 

 and 0.35 to 0.44 mm. broad ; the seta and cilia characters are identical. 

 The plant collected by Munz, Johnston, and Harwood (No. 4226) 

 also comes from a higher elevation than the type collection and is 

 somewhat smaller. 



SELAGINELLA STANDLEYI Maxon, sp. nov. 

 (PI. 6) 

 Plants closely prostrate, the main stems up to 6 cm. long, finely 

 radicose, pinnately branched, the larger basal branches up to 2.5 cm. 

 long and with a few short alternate divisions, the upper branches 

 simple or once dichotomous, all the divisions cespitose, rigidly 

 arcuate-ascending. Leaves crowded, imbricate, rigidly appressed, 

 those of the older stems of a characteristic bronze color, relatively 

 large, the blades broadly acicular, acutish, up to 2.5 mm. long and 

 0.6 mm. broad, with a short lutescent seta ; leaves of the branches 

 mostly dull green, oblong-linear, 2.1 to 2.5 mm. long (seta included), 

 0.35 to 0.45 mm. broad, setigerous at the narrowly obtuse apex (the 

 seta 0.6 to 0.78 mm. long, lutescent throughout, coarsely serrulate- 

 scabrous), ciliate (the cilia lo to 14 on each side, hyaline, stiff, 

 oblique, mostly 0.05 to 0.06 mm. long, passing into pungent serratures 

 toward the apex), rigidly herbaceous, flat above, convex beneath and 

 reddish along the deep median groove, especially toward the cymbi- 

 form apex. Spikes numerous, mostly geminate, erect from a curved 

 base, 7 to II mm. long, about 1.5 mm. thick; sporophylls deltoid to 



