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80 MISSOURI BOTANICAL GARDEN. 
SYNOPSIS OF NORTH AMERICAN SPECIES. 
§ 1. Chamenerion. —Calyx cleft almost to the ovary: corolla slightly 
irregular, the petals usually entire, widely expanding, their margins 
scarcely meeting: stamens inserted ina Single series, the filaments di- 
lated below: style at first recurved: stigma with 4 ultimately divergent ~ 
lobes: capsule mostly linear-fusiform, many-seeded: seeds fusiform, 
beakless, not papillate in our species. — Cespitose perennials from a stout 
caudex bearing sessile scaly winter buds, with terete stems scaly below, 
and ample leaves; our species more or less canescent but not glandular. 
1. E. sprcatum, Lam.— Mostly a couple of feet high, 
subsimple, glabrate below; leaves as much as 150 mm. 
long, alternate, lanceolate, acute, nearly entire, very short- 
stalked, paler below, thin, pinnately veined with the evi- 
dent lateral veins confluent in submarginal loops; inflor- 
escence elongated, racemose, with small bracts; young 
flower-buds soon reflexed but again spreading or ascending 
before expansion; petals 10 to 15 mm. long ; style ex- 
ceeding the stamens, hairy at base; capsules 50 to 75 mm. 
long, from subsessile to long-stalked; seeds .4 x 1.4 mm., 
with very long dingy coma. — FI. Fr. iii. (1778), 482 ; Wat- 
son, Index, 366.— ZH. angustifolia, p. L. Sp. 347. —Z. 
angustifolium, Hausskn. Monogr. 37, and many writers. — 
Usually on hillsides, railroad embankments, etc., Labrador 
to Alaska, south to the mountains of North Carolina, IIli- 
nois, New Mexico, and the hills of southern California; also 
in Greenland, Europe and Asia. — Specimens examined from 
Maine, New Hampshire, Massachusetts, New York, New 
Jersey, Delaware, Ohio, Michigan, Illinois, Wisconsin, Ne- 
braska, New Mexico, Utah, Colorado, Montana, Arizona, 
Nevada, California, Oregon, Alaska, and various parts of 
Canada and British America. — Plate 1. 
Varying much in breadth of leaves, length of capsule, 
and degree of canescence. An albino with more than 
usually canescent pods is var. canescens, Wood, Class Book, 
2 ed., 262, which is essentially the forma albiflora of Hauss- 
knecht, Monogr. 38, and Britton, Cat. Pl. N.J., 108. Lux- 
