— II — 



Macrospores irregularly wrinkled* Strobiles up- 

 right, normal. With 9-12 marginal hairs on each 

 side of leaf; terminal bristles 0.25-0. 45mm. long; 



strobiles 2cm long 



S. Wrightii Hieron. (New Mexico) 



Macrospores with more or less regular net-like 

 thickenings of the membrane (Besides this 

 Californian species, this group contains S. 

 Montevideensis Hieron. and S. Peruviana (Milde) 

 Hieron., both from South America and both with 

 erect strobiles). 

 Strobiles horozontal 5 mm. or less long; micro-and 

 macrosporangia dorsiventrally distributed. With 

 8-15 marginal hairs on each side of the leaf; 

 terminal bristles 0.3-0.45 mm. long; strobiles 

 0.5cm long with 10-20 marginal hairs on each 



side of the sporophyll 



S. Bolanderi Hieron. (California) 



Strobiles over 5mm. long, erect ; macrosporangia in 

 the lower sporophylls. microsporangia in the 

 upper. (Besides the following, this group con- 

 tains S. Wrightii Hieron. from the East Indies). 

 With 5-7 marginal hairs on each side of the leaf ; 



terminal bristle o.i6-o.3mm. long: strobiles 



0.5-2 cm. long with 12-15 marginal hairs on 



each side of sporophyll 



S. Uxderwoodii Hieron. (New Mexico) t 



With 10-17 marginal hairs on either side of the 



leaf; terminal bristle o.45-o.65mm. long; 



strobiles 0.5-icm. long with 35-40 marginal 



hairs on each side of the sporophyll 



S. Sartorii Hieron. (Mexico) 



With 8-15 marginal hairs on either side of the 



leaf; terminal bristle o.i5-o.45mm. long; 



strobiles icm. long with 15-20 marginal bristles 



on each side of sporophyll. 



S. Aschenborxii Hieron. (Mexico) 



•Besides the single American species, this group contains the following 

 exotic species: S. Mildei Hieron.. 5". Arechavalctae Hieron., 5. Sellovii 

 Hieron., and S. Balansae Hieron.. from South America, S. Njam-njamensis 

 Hieron., S. caffoorum (Milde) Hieron., and S. capensis (A. Br.) Hieron., 

 from South Africa, all with normal upright strobiles, and the curious South 

 African 5". Dregei (Presl) Hieron., with the strobiles horizontal, with the 

 two upper rows developed as leaves and the two lower as sporophylls. 



fThe synonymy of this species is as follows: 



SelaginElla Underwoodii Hieron. Dies naturl. Pflanzenf, ' 1 : 714 

 note. 1 90 1. 



Selaginella Fendlcn Hieron. Hedwigia, 39:303, 1900. Not 5". Fend- 

 leri Baker. 



Selaginella ru-pcsiris Fendleri Underw. Bull, Torrey Club. 25:127, 

 1898. 



