40 ERYTHEA. 
6 lines long, or on young plants 2 or 3 inches: peduncles 
terminating the branchlets, with 1 or 2 scarious bracts below 
the inflorescence: flowers in dense globular heads.—On Mt. 
Hood and Mt. Adams. 
10. CALYPTRIDIUM, Nutt.; T. & G. Fl. i. 198. Small 
depressed annuals, with fleshy leaves, and small flowers in 
dense axillary and terminal spikes. Sepals mostly unequal. 
Petals 2 to 4. Stamens 1 to 3, shorter than the petals and 
alternate with them. 
* Petals 2 or 3; stamen 1; sepals with scarious margins; 
seeds obtusely margined. 
1. QO. monanprum, Nutt. lc. Erect, 4 to 8 inches high, 
with many depressed or decumbent branches nearly as long: 
sepals slightly unequal: petals usually 3: style short, un- 
divided.—California, chiefly southward. 
2. ©. rosrum, Wats. Bot. King, 44. t. 6. figs. 6-8. Decum- 
bent, forming a mat 1 to 4inches broad: sepals very unequal: 
petals 2: style 2-parted—Southern Oregon to Nevada and 
California. 
* * Petals 4, stamens 1 to 3; seeds acutely margined. 
3. C. quapRipeTaLum, Wats. Proc. Am. Acad. xx. 356. 
A span high; sepals round-reniform, plane at maturity, 
with greenish centre, and white or rose-tinted scarious 
margin.—Lake County, California. 
4. ©. Parryt, Gray, Proc. Am. Acad. xxii. 285. De- 
pressed; sepals orbicular or oval, herbaceous, with narrow 
white margin: style half as long as the ovary.—San Bernar- 
dino Co., California. 
It will be seen by the foregoing, that the chief result of 
these studies has been the altering of the accepted limits of 
Claytonia, Montia and Calandrinia. Linneus after having 
founded the genus Limnia on what I have called Montia 
