. 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 102d meridian. Botany; Botany. 6. WASHINGTONIA Raf. Am. Month. Mag. 2: 176. 1818. [OsMORRHizA 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, line
. 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 102d meridian. Botany; Botany. 6. WASHINGTONIA Raf. Am. Month. Mag. 2: 176. 1818. [OsMORRHizA 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 S-angular, 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 America, eastern Asia and western South Ameri'ca. 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 J4" long or less. i. W. Claytoni. Style and stylopodium i"-2" long. 2. W. longistylis. Involucels none. Fruit beaked; stylopodium conic. - 3. W. divaricata. Fruit blunt; stylopodium depressed. 4- ^- obtusa. Washingtonia Claytoni (Michx.) Britton. Woolly or Hairy Sweet-Cicely. Sweet Javril. Fig. 3108. Myrrhis Claytoni Michx. Fl. Bor. Am, i: 170. 1803. Osmorrhisa brevistylis DC. Prodr. 4: 232. 1830. O. Claytoni Clarke in Hook. f. Fl. Brit. Ind. 2: 690. 1879. W. Claytoni Britton in Britt. & Brown, III. Fl. 2 : 530. 1897. Erect, at length widely branched above, ii°-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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
