Rydberg : Rocky Mountain flora 139 



Limnia perfoliata (Donn) Haw. Syn. PL Succ. n. 1812. 



Claytonia perfoliata Donn, Ind. Hort. Cantab. 25. 1796. — Willd. 

 Sp. PL 1 : 1 186. 1798. 



v Limnia depressa (A. Gray) Rydb. 



Claytonia parviflora depressa A. Gray, Proc. Am. Acad. 22: 281 



1887. 



•'Limnia parviflora (Dougl.) Rydb. 



Claytonia parviflora Dougl. ; Hook. Fl. Bor. Am. 1 : 225. 1832. 



At least two of the species of Claytonia transferred to Montia 

 are, however, so unlike the rest that they can not very well be in- 

 cluded in Limnia, but are better regarded as types of distinct 



genera. 



f CRUNOCALLIS Rydb. gen. nov 



Procumbent or decumbent water or mud-plants, rooting at the 

 nodes and producing long runners, which develop small globose 

 cormlets at the apex. Leaves several pairs, opposite. Sepals 

 two, nearly equal. Corolla regular. Petals 5, similar and equal. 

 Stamens 5. Ovary 3-ovuled. Capsule 1-3-seeded. Seeds gran- 

 ular-muriculate. 



This genus has the flowers of Claytonia, but the general habit 



of Montia ; the mode of propagation and the seeds are different 



from both. 



• 



Crunocallis Chamissonis (Ledeb.) Rydb. 



Claytonia Chamissoi Ledeb. ; Spreng. Syst. I : 790. 1825. 



'NAIOCRENE (T. & G.) Rydb. gen. nov. 



Claytonia § NaiocreneT. &. G. Fl. N. Am. I : 201, in part. 1838. 



Sarmentose, spreading or decumbent plants, with alternate 

 fleshy leaves, bearing bulblets in their axils. Sepals very unlike, 

 one broad and 2-lobed at the apex. Corolla regular or nearly so. 

 Stamens 5. Ovary 3-ovuled. Seeds 1-3, shining. 



'Naiocrene parvifolia (Mog.) Rydb. 



Claytonia parvifolia Mog. ; DC. Prodr. 3: 361. 1828. 



* EROCALLIS Rydb. gen. nov. 



Perennials with globular corms. Radical leaf usually soli- 

 tary, not present at flowering time. Stem low, with 2 or 3 



