﻿132 Underwood : Selaginella rupestris and its Allies 



The plant was distributed under the name of Selaginella ru- 

 pestris, var. Mexican* but it has nothing to do with the var. Mexi- 

 cana Milde, Fil. Europ. et Atlant. 263. 1867, and this necessitates 

 the adoption of a new name, as it properly deserves specific rank. 



9. "Selaginella struthioloides (Presl). 



Lyeopodium struthioloides Presl, Rel. Haenk. 1 : 82. 1830. 



Selaginella Oregaua D.C. Eaton; Bot. Cal. 2: 350. 1880. 



This plant should be restored to its proper name under which 

 it was well described a half century before its second christening. 

 Hooker* years ago recognized the identity of Presl's plant with 

 the one collected by Scouler at Observatory Inlet, the specimen of 

 which is preserved at Kew and agrees perfectly with the plant 

 known from the Oregon woods whence it has been collected by 

 numerous later explorers and distributed under various names. 

 Singularly enough, Baker, f with Scolder's plant before him, re- 

 ferred Lyeopodium struthioloides Presl which was originally de- 

 scribed from " Nootka Sund M to L. carinatum Desv., a true Lyeo- 

 podium from tropical Asia ! It is so simple in certain quarters to 

 overleap all geographical barriers in the effort to mass species. 



The species above characterized can be readily separated by the 

 following synopsis: 



Stems spreading or creeping. 



Stems close creeping, usually less than 10 cm. long, rooting their entire length. 

 Leaves tapering into a conspicuous slender white awn. I. S. rupestris. 

 Leaves ending abruptly in a minute greenish point. 2. S. Watsoni. 



Leaves six-ranked, closely appre-ed, without awns or points. 



3. S. mutica. 

 Stems spreading, 20-25 cm - long, rooting only at the base; spikes 4-5 mm. long 



leaves ending in a tortuous white hair. 7. S. tortipila. 



Stems extensively trailing, 35 cm. to I meter or more long. 



Sterna >,arcely rooting, 50-150 cm. long, lax with soft spreading leaves. 



9. S. struthioloides. 

 Stems everywhere rooting, 35-40 cm. long, rigid with appressed leaves. 



Stems erect or ascending. 



Spike. 2-3 cm. long, plants deeply rooting in sand. 4. S. arenaria. 



Spikes 1 cm. or less long. 



Leaves eight ranked, with conspicuous long spreading cilia; spikes scarcely 



quadrangular. $ & }lt pincola. 



Leaves six-ranked, slightly ciliate; spike quadrangular. 6. S. BigeUruiu 



8. S. extensa. 



* LI. Lor. Am., 2 : 267. 1840. 



f Handbook of Fern Allies, 17. 1887. 



