Rydberg : Rocky Mountain flora 139 



LiMNiA PERFOLiATA (Donn) Haw. Syn. PI. Succ. ii. 1812. 

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

 Sp. PI. I : I 186. 1798. 



Limnia depressa (A. Gray) Rydb. 

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

 1887. 



Limnia parviflora (Dougl.) Rydb. 



Claytiviia parviflora Dougl. ; Hook. Y\. Bor. Am. i : 225, 1832. 

 At lea.st two of the species of Claytonia transferred to Moiitia 

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

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

 genera. 



CRUNOCALLIS Rydb. gen. nov. , 



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

 nodes and producing long runners, \vhich 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 Chaniissoi Ledeb. ; Spreng. Syst. i : 790. 1825. 



NAIOCRENE (T. & G.) Rydb. gen. nov. 



Claytonia § XaiocnncT. &. 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 



