UMBELLIFERiE. 
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 hack, 
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. lob at a, Ruiz & Pavon. Annual, weak and slender, thinly pubescent, the 
stems dichotomously branched, a foot or two long: leaves thin, reniform to cordate, 
\ to 1^ 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, Toum. Button Snakeroot. 
Calyx-teeth manifest, rigid and persistent. Fruit ovoid or oho void, 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, Coriaceous, spinosely toothed or divided; flowers white or blue, sessile 
in dense heads, bracteate, the outer bracts forming an involucre. 
A'genus of 100 or more species, of the warm and temperate regions of the globe. The 15 to 
18 American species are mostly confined to the Southern Atlantic and Gulf States. 
1. E. petiolatum, Hook. Erect, 1 to 5 feet high, dichotomously branched' 
above, glaucous : radical leaves oblanceolate, spinosely and unequally serrate, atten¬ 
uate into an elongated fistulous petiole, the cauline mostly sessile: heads globose,' 
half an inch in diameter, peduncled; bracts linear-lanceolate, spinosely tipped, at . 
least the outer ones much exceeding the bluish flowers : calyx-teeth a line long, 
exceeding the fruit, which is covered with subulate at length rigid scales. — FI. i. 
250; Torrey, Bot. Wilkes Exp. 315. E. articulatum, Hook, in Bond. Jour. Bot. 
vi. 232. 
Var. armatum, Watson. Bracts broader, entire, all similar and much exceed¬ 
ing the flowersj scarcely dilated at base, rigid and with a thickened margin: style 
shorter than the calyx : usually less glaucous. 
In marshes from San Diego to the Columbia ; or in drier places, a dwarf state but 2 or 3 
inches high. The submerged leaves consist only of the terete jointed petiole without lamina. 
The usual form has the bracts more or less toothed, the inner ones but little exceeding the flowers 
or rarely as long as the outer ones, the styles exceeding the calyx-teeth. The variety is men¬ 
tioned by Dr. Torrey, in Bot. Wilkes Exp. 315, as perhaps distinct. It has been collected from 
Monterey to Humboldt County, Brewer , Samuels, Kellogg , &c. 
4. SANICULA, Toum. Sanicle. 
Calyx-teeth somewhat foliaceous, persistent. Fruit subglobose or. obovoid,- densely 
covered with hooked prickles or tuberculate; ribs obsolete; oil-tubes numerous. 
Seed hemispherical. — Smooth perennials, with nearly naked stems; leaves pal- 
-mately divided, the lobes more or less pinnatifid or incised; flowers unisexual, 
0 1 2 3 4 5 6 7 8 9 10 m.ssour. 
Botanical 
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