RYDBERG: Rocky MOounNTAIN FLORA 139 
LIMNIA PERFOLIATA (Donn) Haw. Syn. Pl. Succ. 11. 1812. 
Claytonia perfoliata Donn, Ind. Hort. Cantab. 25. 1796. — Willd. 
op Pl, £5 4386. 1708. 
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. E832: 
At least two of the species of C/aytonia transferred to Montia 
are, however, so unlike the rest that they can not very well be in- 
cluded in Zimnia, 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, which develop small globose 
cormlets at the apex. Leaves several pairs, opposite. Sepals 
two, nearly equal. Corolla regular. Petals 5, similar and equal. 
tamens 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. 1: 790. 1825. 
NAIOCRENE (T. & G.) Rydb. gen. nov. 
Claytonia § Naiocrene T. &. G. Fl. N. Am.1: 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 Moc.; DC. Prodr. 3) 303, 3728. 
EROCALLIS Rydb. gen. nov. 
Perennials with globular corms. Radical leaf usually soli- 
tary, not present at flowering time. Stem low, with 2 or 3 
