. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. Fruiting calyx x 1. 6-9. K. Patientia, Fruiting calyx x 1. § 1. LAPATHUM [Tourn.] DC. (Dock.) Flowers perfect or munoeeiously polygamous; herbage not sour or scarcely so. (^Flowering through the summer.') 1. R. venbsus Pursh. Stems from running rootstooks, erect (2-6 dm. high or less), with conspicuous dilated stipules; leaves on short .but rather slender petioles, ovate or oblong to lanceolate, acute or acuminate, only the low- est obtuse at ba
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. Fruiting calyx x 1. 6-9. K. Patientia, Fruiting calyx x 1. § 1. LAPATHUM [Tourn.] DC. (Dock.) Flowers perfect or munoeeiously polygamous; herbage not sour or scarcely so. (^Flowering through the summer.') 1. R. venbsus Pursh. Stems from running rootstooks, erect (2-6 dm. high or less), with conspicuous dilated stipules; leaves on short .but rather slender petioles, ovate or oblong to lanceolate, acute or acuminate, only the low- est obtuse at base ; panicle nearly sessile, short, dense in fruit; valves entire, without grains, cordate with a deep sinus, rose-color. — Sask. to centr. Mo., and westw. Fig. 691. 2. R. Patientia L. (Patience D.) Avery tall species, green and glabrous or nearly so, with ovate-oblong and lanceolate leaves (broadest above the base), those from the i^oot dm. long and dm. broad; pedicels with tumid one of the heart-shaped nearly or quite entire valves (B mm. broad) usually bearing a very small grain, or its midrib merely thickened at base. — Rich open soil, Nfd. to N. Y. and Pa. (Nat. from Eurasia.) Pig. 692. Var. ktSk- Bicus Boiss. Grain conspicuous, 2-3 mm. long.—Mich, to Mo., and westw. (Nat. from Eurasia.) 3. R. occidentilis Wats. Smooth, stout, erect, usually purple-tinged ; leaves large, flatfish; pedicels obscurely jointed; valves broadly ovate or orbicular, somewhat obtusely pointed, often denticulate, 6-9mm. broad, all naked or one of them grain-bearing.—Eich (often brackish) soil. Lab. to Alaska, s. to e. Me., Minn., N. Dak., Col., and Cal. Fig. 693. 4. R. Britinnica L. (Great Water D.) (1-2m. high); leaves oblong-lanceolate,rather acute at both ends, transversely veint>d, and with obscurely erose-crenulate margins (the lowest, including the petiole, 3-6 dm. long, the middle rarely truncate or ob- scurely cordate at base) ; racemes upright in a large com- pound panicl
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