CATALOGUE OF PLANTS. 139 P. Patagonica, Jacq., var. aristata (Mx.), Gray. Rare. Field, Southwest Harbor (Annie S. Downs);— Bar Harbor (W. H. Manning). Adventive from the West. DIVISION III. APETALÆ. AMARANTACEÆ. AMARANTH FAMILY. AMARANTUS, L. AMARANTH. A. RETROFLEXUS, L. AMARANTH PIGWEED. Roadsides and cultivated grounds; becoming frequent. Bar Harbor ; Southwest Harbor ; Somesville ; Long Pond, etc. (Rand);—Seal Harbor, etc. (Redfield). Adventive from Trop- ic al America. A. albus, L. TUMBLEWEED. Cultivated grounds; becoming frequent. Southwest Harbor; Long Pond; Seal Harbor, etc. (Rand);— field on Northeast Creek (M. L. Fernald). Adventive from the South and West. CHENOPODIACEÆ. GOOSEFOOT FAMILY. SPINACIA, L. SPINACH. Dioecious; flowers axillary, glomerate. Stamine te flowe rs in racemose-paniculate clusters, calyx 4-5-parted, the lobes equal. Calyx of pistillate flowers ventricose-tubular, 2-3-toothed; ovary ovoid, styles 4, elongated, filiform, achene included in the tur- gid indurated calyx, which is often 2-3-horned on the back; seed vertical and compressed; embryo annular, surrounding the farinaceous albumen. Darlington, Am. Weeds and Useful Plants (Rev. ed.), 274. S. GLABRA, Mill. Herbaceous, glabrous throughout; leaves sagittate, sometimes oblong-ovate, entire, acute, slender-petioled ; flowers green ; fruiting calyx solitary, rounded, without prickles, toothed at