Satucula. U M BELLI I<ER.E. 



255 



2. BOWLESIA, Ruiz k I'avoii. 

 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 

 fow-floworod umbels on axillary poduiiclcs. 



A down species, cliiofly South Amoricaii, oiio inngiiig nortliwnnl lo Moxico, Av'mma, nini 

 Cixlifornin. 



1. B. lobata, Ruiz & Pavon. Annual, weak and slender, thiidy pubescent, the 

 stems dichotomously branched, a foot or two long: leaves thin, reniform to cordate, 

 i to 1^ inches broad, shorter than the slender petioles, do('])ly .^-lobcd, the acutish 

 lobes entire or 1 -2-toothed: peduncles much shorter than tlie petioles; the umbels 

 1 - 4-flowered : fruit a line long, sessile or nearly so, pul)escent, the inflated calyx 

 not adherent to the carpels, Avbich are at first but partially occupied by the seed. — 

 Fl. Peruv. iii. 28, t. 251 ; Torr. & dray, Fl. i. GOl. 



In damp shady places, from the Sacramento Valley southward, rather rare. The species 

 doubtless mcludes B. tcncra, Spreiigel. 



3. ERYNGIUM, Tonrn. Button Snakkuoot. 

 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 somi-torcto. — Herbs, chiefly perennial; 

 loaves 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 glolw. Tlic 15 to 

 IS American species are mostly confined to the Southern Atlantic and (".ulf States. 



1. E. petiolatum, Hook. Erect, 1 to .5 feet high, dichotomously branched 

 above, glaucous : ratlical leaves oblanceolate, spinosely and unequally serrate, atten- 

 uate into an elongated fistulous petiole, the cauline "mostly se.>?sile : 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. — Fl. i. 

 250; Torrey, Bot. Wdkes Exp. 315. E. articulatuvi, Hook, in Lond. Jour. Bot. 

 vi. 232. 



Var. armatum, Watson. Bracts broader, entire, all similar and much exceed- 

 ing the flowers, scarcely dilated at base, rigid and with a thickened margin : stylo 

 shorter than the calyx : usually less glaucous. 



In marsliPs from San Diego to tlio Cohiml)ia ; or in drier places, a dwarf state but 2 or 3 

 inches high. Tlio submerged leaves consist only of tlio terete jointed petiole without lamina. 

 The usual form lias tlie bracts more or less tootlied, the inner ones but little exceeding the flowers 

 or rarely as long ns the outer ones, the styles exceeding the calyx-teetli. The variety is men- 

 tioned by Dr. Torrey, in Bot. Wilkes Kxp.'.'nf), as jierhaps distinct. It has been collected from 

 Monterey to Humboldt County, Brewer, i^mnncls, Kellogri, kc. 



4. SANICULA, Tourn. Sanicle. 



Cnlyx-toeth nomewhat foiiacoous, persistent. Fruit subglobose or obovoid, donRcly 



covered with honked juiokles or tubcrctdate ; ribs obsolcle ; oil-tubes ninnerous. 



Seed hemispherical. — Smooth ]ierennialR, with nearly naked steins ; leaves pal- 



mately divided, the lobes more or less pinnatifid or incised ; flowers unisexual. 



