GOOSEFOOT FAMILY 83 



1 or 2 in each axil, the pedicels reflexed. Akenes black, shin- 

 ing. — Abundant in Yosemite Valley, etc., and occurring at 

 higher altitudes as var. latifolium Greene, with shorter stems, 

 broader leaves, and more crowded flowers. 



11. P. kelloggii Greene. Stem 2j4 in. or less high, with 

 numerous erect branches from the base. Leaves crowded, 

 linear, under l /2 in., acute, the upper not much reduced. 

 Flowers erect, crowded. — Ostranders, and elsewhere in the 

 higher mountains. 



12. P. imbricatum Nutt. Stem solitary, slender, usually 

 simple below, 1 to 3 in. high. Leaves remote, linear, ^ to 1 

 in. long, acute, the upper ones short and crowded. Flowers 

 erect, crowded. (P. watsonii Small.) — Moist soil at middle 

 and upper altitudes. 



13. P. convolvulus L. Black Bindweed. Stems 1 ft. or 

 more long, twining. Leaves ovate, broad and "eared" at base, 

 taper-pointed, 1 to 2 in. long, glabrous. Flowers in clusters 

 or racemose. Akene black. — An introduced weed, abundant 

 near settlements. 



CHENOPODIACEAE. Goosefoot Family. 

 Weedy herbs with alternate leaves, no stipules, and minute 

 greenish flowers. Ovary 1-celled, becoming a dry 1-seeded 

 fruit. In our single genus the flowers are sessile in small 

 dense bractless clusters, the persistent calyx is 5-parted, and 

 the stamens are 5 in number. 



1. CHENOPODIUM. Goosefoot. Pigweed. 



1. C. album L. Lamb's Quarters. Pigweed. An erect 

 simple-stemmed white-mealy annual, 1 or 2 ft. high. Leaves 

 ovate to lanceolate, mostly angulate-toothed, the blade 1 or 



2 in. long. Flower-clusters in panicled spikes. — An introduced 

 weed of waste places. C. murale L., with coarsely toothed, 

 bright-green leaves, on much-branched stems, is also to be 

 expected. 



2. C. bdtrys L. Jerusalem Oak. An erect very gland- 

 ular greenish annual, 3 in. to 1 ft. high, simple or branched 

 from the base. Leaves oblong, pinnatifid into oblong angular 

 lobes, y 2 to V/ 2 in. long. Flower-clusters in narrow leafless 

 panicles. — Introduced weed found in Yosemite Valley; the 

 herbage noticeably glandular and aromatic. 



AMARANTHACEAE. Amaranth Family. 

 Weedy herbs with alternate leaves, no stipules, and minute 



