114 CRUCIFER.E. Thy.^iiuoccrjnis. 



Bot. Calif, i. 48; M. E. Joucs, Bot. Gaz. viii. 283. T. pulrhellus, Fiscb. & Mey. Ind. Sem. 

 Hort. I'etrop. ii. 1835, 25; Hook. Coinp. Bot. Mag. ii. 9 —Dry ground ou hills, from 

 S. California and Arizona to Wasliingtou, SiiksJorf, and Idaho, Si>ulil ng, Wilccr. 



Var. elegans, Rouinson, n. var. (Lace-pod.) Fruit larger, 2 to 4 lines broad; 

 wing usually perforated with regular series of roundish openings; upper leaves inclining 

 to be broader tlian in typical form. — T. elegans, Fisch. & Mey. 1. c. 26; Hook. 1. c., & 

 If. t. ."39; Torr. & Gray, Fl. i. 118. T.'curvipes, Brew. & Wats. Bot. Calif, i. 48, in part; 

 AVats. Bibl. Index, 74. — Arizona, Pn'ngle, Palnwr, and Calif(»rnia nortli at lea.st to Ciiico, 

 Grai/. This variety, while iu its extreme form strikingly different from the typical phint, 

 is thoroughly connected with the latter by a very complete and gradual series of inter- 

 mediate forms. Prof. Greene states that it does not ;.:row in the Coast Range, but it has 

 l)een collected on Mt. Diablo, Brewer, and in the Napa Valley, BIt/elow. 

 T. laciniatus, Nutt. Smooth or nearly so, glaucous, 8 to 15 inches high: leaves thinner 

 tliau in the preceding; those near iiase not forming a dense or persistent rosette, linear or 

 subentir© or deeply pinnatitid into narrow linear acute segments; upper leaves entire, 

 elongated (10 to 15 lines in length), scarcely a line in breadth, inserted by a narrow bajse : 

 racemes 4 to 8 lines long: fruit obovatc, elliptic, or orbicular, 1^ to If lines in diameter 

 (including the entire or subentire imperforate wing), distinctly reticulated, commonly but 

 not always glabrous; pedicels slendei, spreading and detiexed. — Nutt. in Torr. & Gray, Fl. 

 i. 118 ; Wats. Bot. King Exp. 31 ; Brew. & Wats. Bot. Calif, i. 49. — Central and Southern 

 California, Arizona. 



Var. crenatus, Brewer. Fruit with a deeply crenate-toothed or perforated wing, 

 usually becoming 2 to 2^ lines ia breadtli : racemes usually shorter and denser than in type. 

 — Bot. Calif, i. 49. 7\ crenalaa, Nutt. 1. c. T. ramosus, Greene, Bull. Calif. Acad. Sci. ii. 

 390. — Occurring with and not always distinguishable from the typical form. 



* * * Fods 4 to 5 lines in diameter, plano-convex or nearly so ; the wing radiately nerved, 

 ueitlier toothed nor perforated : upper leaves ovate-oblong or ovate-lanceolate, cordate- 

 auriculate. 



T. radians, Benth. Stems 10 to 15 inches high, simple or with a few simple elongated 

 ascending branches, glabrous : lowest leaves runcinately toothed or piunatifid; the upper 

 sub-entire : racemes long, loosely flowered ; pedicels usually ascending but nodding near 

 apex, 4 to 8 lines long : petals purple, exceeding the c<alyx : fruit downy or quite smooth, 

 white, with dark nerves radiating in the wing. — PI. Hartw. 297; Brew. & Wats. Bot. 

 Calif, i. 49. — Central California, Sacramento Valley, northward to Oregon, HoweU. Not 

 abundant, but striking on account of its large light-colored and radiately nerved fruit. 



4. BERTEI16A, DC. (Dedicated to Carlo Giuseppe Bertero, a Pied- 

 Pjontese botanist, 1789-1831, who travelled in Sojith America.)— A small genus 

 often united with Ahjssum, with which many of its technical characters agree, but 

 so different in its tall branching habit, as well as its very deeply cleft petals and 

 generally more numerous margined or winged seeds, as to appear worthy of 

 generic rank, to which it has lately been restored by Prof. Prantl. — Mem. Mus. 

 Paris, vii. 232, Syst. ii. 290, & Prodr. i. 158. Under Farsetia, Reichenb. Consp. 

 184. Under Ahjssum, Benth. & Hook. Gen. i. 74. [By B. L. Robinson.] 



B. incAna, DC. Erect or somewhat decumbent, 1 to 2 feet high, pale green: branches 

 simple: radical leaves spatulate, 2 to 4 inches long^ the cauline similar or lanceolate, 

 smaller : petals white, much exserted, deeply bifi<i, almost as in Stelbtrin : capsule elliptic, 

 somewhat inflated, about 3 lines long; cells about 6-seeded ; style slender, persi.stent. — 

 Syst. ii. 291. Alyssum incaninn, L. Spec. ii. 650. — Grain, hay, and clover fields, becoming 

 frc(iuent, N. New England an<l Massachusetts, probably introduced with grass or clover 

 seed ; also a ballast-weed about New York City, Judge Brown. (Adv. from Eu.) 

 B. mttAbilis, DC, a very similar species with pods larger and flatter, 4 to 5 lines long, is 



reported as somewhat established at Hingham, Ma.ss., Bonv... (Adv. from Eu.) 



