138 Rhodora [JULY 
Rumex Parentia L. Throughout the southeastern section of 
Washington County this is the abundant Rumex of all open situations 
which are not too dry, growing freely in fields, meadows, thickets, 
and along roadsides. It is fully mature and dull brown in color 
early in August, when the less common R. Britannica is beginning 
to flower. 
MoNTIA FONTANA. Wehave in North America three clearly defined 
species which have generally passed as Montia fontana. ‘These may 
be briefly described as follows:— 
A. Seeds dull (except under a lens), conspicuously and closely muricate with 
bluntish or acutish tubercles: a yellowish green annual with flowers 
both lateral and terminal, the latter in 3-8-flowered cymes. 
l. M.fontana L. 
B. Seeds lustrous, the tubercles obscure or short and flattened. 
A deep green perennial, the branches rooting at the nodes: flowers chiefly 
in 3-8-flowered lateral cymes, the branches usually terminated by a 
* tuft of leaves; seeds about 1 mm. long, very plump, slightly lustrous. 
2. M. rivularis Gmel. 
Yellowish-green annual, the simple or slightly forking stems not root- 
ing at the nodes: flowers solitary or in pairs from the nodes and tips 
of the stems and branches: seeds 1-1.6 mm. long, lenticular, highly 
lustrous . . . . . . . . e . 8. M. lamprosperma Cham. 
1. M.rowTANA L. Sp. i. 87 (1753), in part. M. minor Gmel. Fl. 
Bad. i. 301 (1805). Upper leaves oblong to oblanceolate and ses- 
sile: the terminal eymes sessile or short-stalked: mature capsules 
2-9.5 mm. in diameter: seeds 1-1.3 mm. long.— Eurasia, 
Oregon and California. PLATE 84 (a). 
Var. tenerrima (Gray) n. comb. Claytonia Chamissonis Eschsch., 
var. tenerrima Gray, Proc. Am. Acad. viii. 378 (1872). C. Hallit 
Gray, Proc. Am. Acad. xxii. 283 (1887). Montia Hallii Greene, 
Fl. Franciscana, 180 (1891), as to synonym. Very slender: 
leaves mostly broad-spatulate and petioled: cymes often long- 
stalked: mature capsules 1-2 mm. broad: seeds barely 1 mm. 
long.— British Columbia to California. 
2. M. mivuLARIS Gmel. Fl. Bad. i. 302 (1805).— Europe. 
NEWFOUNDLAND: ditches, Holyrood, August 28, 1894, Robinson 
& Schrenk, no. 48. PLATE 84 (b). 
3. M. rAMPROSPERMA Cham. Linnaea, vi. 565 (1831).— Arctic 
and boreal Europe; northeastern Asia; Alaska; Greenland to 
eastern Mainé. ‘The following specimens from eastern America 
have been examined. LABRADOR: Nain, Lundberg; Hopedale, 
! For the plate which shows very clearly the habitat and seed-characters of the segre- 
gates of Montia fontana we are indebted to the generosity of Mr. F. Schuyler Mathews, 
