﻿Underwood : Selaginella rupestris and its Allies 133 



Besides the above species there are a number of interesting 

 forms that are peculiar in standing strictly by themselves, having 

 for the most part no very close alliances ; the material in every 

 case is scanty and for the greater part consists of wholly sterile 

 plants ; in order to call the attention of collecters to these forms 

 they are briefly characterized ; they are mostly found in the region 

 extending from Texas to southern California and northern Mexico, 

 a region already prolific in well marked species, and are par- 

 ticularly commended to botanists living or collecting in this 



portion of the country. 



i. A prostrate plant with strongly secund leaves, usually show- 

 ing a distinct dorso-ventral character both in color and arrange- 

 ment of leaves ; two forms occur, one with no hair point to the 

 leaves and the other with a well developed hair point. To the 

 former belong Parish, no. 1 200, San Bernardino, California ; Pal- 

 mer, no. 455, southwestern Chihuahua, 1885 ; and a small plant 

 collected by Major Emory in 1846. To the latter type belong 

 Nealley, no. 555, Chenates, western Texas, 1889 ; and a plant col- 

 lected by Fremont in California, 1845-7. All these forms are 



■ 



sterile. 



A 



A 



pacted and ending in a minute point, 

 collected in Inyo Co., California, by Coville and Funston, no. 628, 



„. T7- j.v: ^ ««;«~ cimilar nl.int in Herb. Kcw. is 



Vail 



marked "Z. bryoides Nutt." from San Diego and is presumably 



V 



3. A very small creeping form with closely apprcssed 

 scarcely pointed leaves and short clavate branches ; ^a ^single 

 meagre specimen collected on the 



Mexican 



Parry 



Acad. Sciences is marked " Lycop 



in 



Nuttall's own hand, while another specimen in Herb. Kew bear 

 the mark, « L. rupestre fi brevipes, Oregon, Nutt." All these ster- 

 ile forms represent an interesting form and in connection with the 

 facts above stated indicate clearly that the last word has 3 t to be 

 said in regard to the members of this interesting group of spcc.es. 



15 February 1898. 



