. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . 'i^-^^ -^ 6. WASHINGTONIA- Raf. Am. Month. Mag. 2: 176. 1818. [ Raf. loc. cit. 1818.] Perennial herbs with fleshy clustered thickish aromatic roots, decompound leaves, and loose few-rayed umbels of white flowers. Involucre and involucels of few narrow bracts, or none. Calyx-teeth obsolete. Petals incurved at the apex. Stylopodium small, conic. Fruit narrow, linear
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . 'i^-^^ -^ 6. WASHINGTONIA- Raf. Am. Month. Mag. 2: 176. 1818. [ Raf. loc. cit. 1818.] Perennial herbs with fleshy clustered thickish aromatic roots, decompound leaves, and loose few-rayed umbels of white flowers. Involucre and involucels of few narrow bracts, or none. Calyx-teeth obsolete. Petals incurved at the apex. Stylopodium small, conic. Fruit narrow, linear or oblong-linear, short-beaked, compressed, more or less bristly along the ribs, attenuated at the base. Carpels 5-anguIar, slightly flattened dorsally, the ribs acute and nearly equal; oil-tubes obsolete or none. [In honor of George Washington.] About 15 species, natives of North .\merica, eastern Asia and western South America. Besides the following about 8 others occur on the west coast and in the Rocky Mountains. Type species: Myrrhis Claytoni Michx. Involucels of several persistent bracts. Style and stylopodium J J" long or less. Style and stylopodium i"-z" long. Involucels none. Fruit beaked : stylopodium conic. Fruit blunt; stylopodium depressed. 1. W. Claytoni. 2. W. longistylis. I. Washingtonia Claytoni (Michx.) Britton. Woolly or Haiiy Sweet-Cicely. Sweet Javril. Fig. 3108. Myrrhis Claytoni Michx. Fl. Bor. Am. i; 170. 1803. Osmorrhiza brevislylis DC. Prodr. 4: 232. 1830. O. Claytoni Clarke in Hook. f. Fl. Brit. Ind. 2: 690. 1879. IV. Claytoni Britton in Britt. & Brown, 111. Fl. 2: 530. 1897. Erect, at length widely branched above, il°-3° high, villous-pubescent throughout, especially when young. Lower leaves long-petioled, large, sometimes 1° wide, ternately decompound, the segments ovate or oval, incised-dentate; upper leaves nearly sessile, less com- pound; umbels long-peduncled, 2-6-rayed; rays divari- cate, 1-2' long in fruit; involucels of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
