Part 29 (2/2)

B. (or SINaPIS) aLBA. (WHITE MUSTARD.) Pods bristly, ascending on spreading pedicels, more than half its length occupied by the sword-shaped 1-seeded beak; leaves all pinnatifid; seeds pale. (Cult.

and adv. from Eu.)

B. (or SINaPIS) NGRA, Koch. (BLACK MUSTARD.) Pods smooth (' long), 4-cornered (the valves only 1-nerved), erect on appressed pedicels forming a slender raceme, tipped with a stout persistent style; seeds dark brown, smaller and more pungent than in the last; lower leaves with a large terminal lobe and a few small lateral ones.--Fields and waste places. (Adv. from Eu.)

B. CAMPeSTRIS, L., in the form of the RUTABAGA and the TURNIP, sometimes persists a year or two in neglected grounds.

18. CAPSeLLA, Medic. SHEPHERD'S PURSE.

Pod obcordate-triangular, flattened contrary to the narrow part.i.tion; the valves boat-shaped, wingless. Seeds numerous. Cotyledons inc.u.mbent.--Annuals; flowers small, white. (Name a diminutive of _capsa_, a box.)

C. BURSA-PASTRIS, Moench. Root-leaves cl.u.s.tered, pinnatifid or toothed; stem-leaves arrow-shaped, sessile.--Waste places; the commonest of weeds. April--Sept. (Nat. from Eu.)

19. THLaSPI, Tourn. PENNYCRESS.

Pod orbicular, obovate, or obcordate, flattened contrary to the narrow part.i.tion, the midrib or keel of the boat-shaped valves extended into a wing. Seeds 2--8 in each cell. Cotyledons acc.u.mbent. Petals equal.--Low plants, with root-leaves undivided, stem-leaves arrow-shaped and clasping, and small white or purplish flowers. (Ancient Greek name, from ????, _to crush_, from the flattened pod.)

T. ARVeNSE, L. (FIELD P. or MITHRIDATE MUSTARD.) A smooth annual, with broadly winged pod ' in diameter, several seeded, deeply notched at top; style minute.--Waste places; rarely naturalized. (Nat. from Eu.)

20. LEPiDIUM, Tourn. PEPPERWORT. PEPPERGRa.s.s.

Pod roundish, much flattened contrary to the narrow part.i.tion; the valves boat-shaped and keeled. Seeds solitary in each cell, pendulous.

Cotyledons inc.u.mbent, or in n. 1 acc.u.mbent! Flowers small, white or greenish. (Name from ?ep?d???, _a little scale_, alluding to the small flat pods.)--Ours are annuals or biennials, except the last.

[*] _Leaves all with a tapering base, the upper linear or lanceolate and entire, the lower and often the middle ones incised or pinnatifid; pods...o...b..cular or oval, with a small notch at the top; the style minute or none; stamens only 2._

1. L. Virginic.u.m, L. (WILD PEPPERGRa.s.s.) _Cotyledons acc.u.mbent_ and seed minutely margined; _pod marginless_ or obscurely margined at the top; petals present, except in some of the later flowers.--June--Sept.

A common roadside weed, which has immigrated from farther south.

2. L. intermedium, Gray. _Cotyledons inc.u.mbent_ as in the following; _pod minutely wing-margined at the top_; petals usually minute or wanting; otherwise nearly as in n. 1.--Dry places, from western N. Y.

and N. Ill., north and westward.

L. RUDERaLE, L. More diffuse, the smaller and oval _pods and the seeds marginless; petals always wanting_.--Roadsides, near Boston, Philadelphia, etc.; not common. (Adv. from Eu.)

[*][*] _Stem-leaves with a sagittate partly clasping base, rather crowded._

L. CAMPeSTRE, Br. Minutely _soft downy_; leaves arrow-shaped, somewhat toothed; _pods ovate, winged_, rough, the style longer than the narrow notch.--Old fields, Ma.s.s. and N. Y. to Va.; rare. (Nat. from Eu.)

L. DRaBA, L. Perennial, _obscurely h.o.a.ry_; leaves oval or oblong, the upper with broad clasping auricles; flowers corymbose; _pods heart-shaped, wingless_, thickish, entire, tipped with a conspicuous style.--Astoria, near New York, _D. C. Eaton_. (Adv. from Eu.)

21. SENEBIeRA, DC. WART-CRESS. SWINE-CRESS.

Pod flattened contrary to the narrow part.i.tion; the two cells indehiscent and falling away at maturity from the part.i.tion as closed nutlets, strongly wrinkled or tuberculate, 1 seeded. Cotyledons narrow and inc.u.mbently folded transversely. Low and diffuse or prostrate annuals or biennials, with minute whitish flowers. Stamens often only 2.

(Dedicated to _J. Senebier_, a distinguished vegetable physiologist.)

S. DiDYMA, Pers. Leaves 1--2-pinnately parted; _pods notched at the apex, rough-wrinkled_.--Waste places, at ports, E. Ma.s.s. to Va., etc.; an immigrant from farther south.

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