Missouri Botanical Garden PETER H. RAVEN LIBRARY Pagination Note: Since many of the items lack a specific page number, the page number dispiayed oniine refers to the sequentiaily created number each item was given upon cataloging the materials. 0 1 2 3 4 5 6 7 8 9 10 cm copyright reserved D E Ss: CoMi©# ■r^?o X zc 6 ao . W ® I Q '§ I I »o s H l> I" h-a ^ ^ o^t o - pao Q p^ ' iiii|iiiO cm Missouri Botanical Gardot George Engelmahn Papers 6 7 8 9 10 copyright reserved Missouri BOTAN ICAL Garden Missouri Botanical Garden cm 2 3 4 5 6 7 8 9 10 copyright reserved S6 73. j i w c/5 d H w w « oj zi J^/ /m (jsdt^ JlZ)t^ ^ ^ <~Z. (i.d^^Ac..r \%Jr /^u.t- ^ yiurx^-i D at! Cll 1^0 1^ a-D 00 H p CO X M > r (^^53 George Engelmann Pahers 0 1 2 3 4 5 6 7 8 910 Missouri Botanical cm copyright reserved garden fftSSOL’Rl GEO';'.r w:-r, - ■; ^ t —y^t ^gr ^ S~- '^>/ -T^r .’?: 2 :^ 2. A-v/ , t ' '^“'T^^ / ci.rr->^^ — ^ Kj-i^ ‘—C. U_. cm 2 3 4 5 6 7 8 9 10 copyright reserved Sanicula. UMBELLIFER^. 255 2. BOWLESIA, Ruiz & Pavon. CalyX’teeth rather prominent. Petals elliptical, obtusish. Fruit broadly ovate in outline, with a narrow commissure, turgid, becoming depressed on the back, without ribs or oil-tubes. Seed flat on the face, slightly hollowed on the back, not filling the calyx. — Slender herbs, with scattered stellate pubescence ; leaves oppo- site, simple, with scarious and lacerate stipules ; flowers white, minute, in simple few-flowered umbels on axillary peduncles. A dozen species, chiefly South American, one ranging northward to Mexico, Arizona, and California. 1. B. lobata., Ruiz & Pavon. Annual, weak and slender, thinly pubescent, the stems dichotomously branched, a foot or two long : leaves thin, reniform to cordate, J to IJ inches broad, shorter than the slender petioles, deeply 5-lobed, the acutish lobes entire or 1 - 2-toothed: peduncles much shorter than the petioles; the umbels 1 - 4-flowered : fruit a line long, sessile or nearly so, pubescent, the inflated calyx not adherent to the carpels, which are at first but partially occupied by the seed, — FI. Peruv. iii. 28, t. 251 ; Torr. & Gray, FI. i. 601. In damp shady places, from the Sacramento Valley southward, rather rare. The species doubtless includes B. tenera, Sprengel. 3. ERYNGIUM, Tourn. Button Snakeeoot. Calyx-teeth manifest, rigid and persistent. Fruit ovoid or obovoid, scarcely com- pressed, covered with hyaline scales or vesicles ; the ribs obsolete, and oil-tubes (in our species) wanting ; carpels and seeds semi-terete. — Herbs, chiefly perennial ; leaves rigid spinosely toothed or divided; flowers white or blue, sessile 11 W 0 1 2 3 cm 4 5 6 7 8 9 10 copyright reserved Missouri BOTAN ICAL Garden 256 UMBELLIFERiS. in irregularly compound few-rayed umbels, involucrate with sessile leafy usually g g toothed bracts, the bracts of the involucels small and entire. m § A genus of a few scattered species, more than half of them native of North America, and of ^ these only two are confined to the region east of the Rocky Mountains. The Californian species g q are chiefly limited to the Coast Ranges and are peculiar in their habit, small fruit, &c. p > % Leaves palmately divided, the lobes toothed, or lacerate, or pinnatijid with decur- ' - ■ rent segments : rootstocks thickened. ■ 4- Mature fruit shortly pedicellate : flowers yellow. ^ > 1. S. arctopoides, Hook. & Am. Stems very short, with several divergent scape-like branches, often much exceeding the leaves (3 to 6 inches long), each bear- ' ^ ing an umbel of 1 to 3 elongated rays : leaves deeply 3-lobed, the cuneate divisions once or twice laciniately cleft, with lanceolate acute spreading segments : involucre of 1 or 2 similar leaflets : heads large, 3 to 6 lines in diameter, with conspicuous involucels of 8 to 10 narrowly oblanceolate mostly entire bracts : fruit shortly pedicellate, Ih lines long, naked at base, strongly armed above. — Bot. Beechey, 141 ; Hook. El. i. 258, t. 91. About San Francisco and eastward in the Sacramento Yalley, in the plains and on dry hillsides. Strongly marked by its low scape-like branches, large involucels, and laciniately lobed leaves; plant yellowish green. The figure in Hook. FL represents the species poorly, and but for the large solitary head might be supposed t ’ " ) be from a low form of S. laciniata. =U 0 1 2 3 4 5 6 7 8 9 10 Missouri Botanical cm copyright reserved garden /43 0 1 2 345678910 Missouri Botanical copyright reserved garden cm