354 ZYGOPHYLLACE.E. Trlhulus. 



T. cistoides, L. Perennial: leaves silky -canescent, sometimes glahrate and greener: 

 lealiets oliloii'g, 3 to 5 lines long: petals usually an inch long, e(iualling tlie peduncle : car- 

 pels 3-5-seeded, tuberculate, armed with two to four long aud stout spines. — S])ec. i. 387 ; 

 Jacq. Hort. iSchoenb. t. 103; Gray, 1. c. 116, t. 145; Griseb. Fl. W. Ind. 134. — Coast 

 of S. Florida; also southwestern borders of Arizona. ( I'rop. cosmopolite mostly on sea 

 coasts.) 

 T.* TERRESTRis, L. Silky-villous annual, branched from the base; branches elongated, de- 

 cumbent: leaflets 5 to 7 pairs, small, oblong: short-peduiicled flowers small: pale yellow 

 petals a line or two iu length, scarcely exceeding the sepals : hirtellous carpels with median 

 warty or spinulose crest and 2 (to 4) stout spreading spines (those from neighboring sides 

 of adjacent carpels approximate in j)airs). — Spec. i. 387 ; Reichenb. Ic. Fl. Germ. v. t. 161 ; 

 Schk. Ilandb. t. 115. — Not infrequently collected on ballast and made land in the Midd.and 

 S. Atlantic States, Broicn, Parker; also found at Newport, Hock Co., Nebraska, J. M. Bates, 

 communicated by Prof. Britton. 



§ 2. Calyx mostly deciduous : cells of the ovary double the number of the 

 petals (8 to 10) and uniovulate, sometimes one or more of the alternate ones 

 abortive : seed solitary and suspended in the cells. 



T.* Calif ornicus, Watson. ^ Depressed, cinereous-pubescent : leaflets (4 to) 5 or 6 pairs, 

 * 2 or 3 lines long, half as broad : petals 2 or 3 lines long : fruit ovate in outline, consi)icuously 

 beaked, the maturing carpels 2 lines long, armed with a few equal short rather sluirp but 

 soft spines. — Proc. Am. Acad. xi. 125; Brew. & Wats. Bot. Calif, i. 91 ; Gray, Proc. Am. 

 Acad. xxii. 306.-2 — S. Arizona, Primjle, Lemmon. (Northern Mex., Palmer ; Lower Calif., 

 Palmer, Brandegee.) 

 T.* brachystylis, Robinson, n. comb. Leaflets only 4 pairs, when fully developed con- 

 siderably larger than in the last preceding species, 5 or 6 lines long, half as broad, very 

 oblicjue at thcTbase : calyx commonly deciduous much before the maturity of the fruit : petals 

 2 or 3 lines long, little exceeding the sepals, orange-yellow : carpels 9 or 10, carinate and 

 bearing a few low warts; style short, not a line in length. — A'aZ/.s/ram/a marima. Gray, 

 PI. WHght. ii. 26. K. braclujslylis, A. M. Vail, Bull. Torr. Club, xxiv. 206. — New Mexico, 

 east side of Rio Grande, Wright, no. 912, at Mesilla, Ilai/es, and on mesa near Las Cruces, 

 3,900 feet, Wooton. (Guaymas, Mex., Palmer.) Distinguished from the following by its 

 more promptly deciduous calyx, deeper-colored petals, and shorter style. 



§ 3. Calyx more or less persistent : cells of the ovary by duplication double 



the number of the petals, 10 or 12, all fertile and uniovulate, at maturity form- 



ino' as many rugose or barely tuberculate akeniform nutlets, which fall away 



from a persistent styliferous axis ; solitary seed suspended : stamens opposite the 



petals adnate to their bases : ours annuals, and the stems ascending. — Kallstroemia, 



Scop. Introd. 212; p:ndl. 1. c. no. 6031 ; Gray, Gen. 111. ii. 117, t. 146. 



T. maximUS, L. Hirsute-pubescent : leaflets 2 to 4 pairs, oblong or oval, 4 to 9 lines long : 



peduncles not surpassing the leaves : sepals oblong-lanceolate, or in age linear, not sur])assing 



the mature carpels : petals greenish yellow, quarter inch long : conical or thickened style 



hardly longer than the carpels (2 lines long), all but its base often deciduous from the fruit. 



— Spec. i. 386 (Sloane, Hist. Jam. i. 209, t. 132, whence Liunasus took the inappropriate 



name); Jacq. Ic. Rar. t. 462; Ell. Sk. i. 476. T. terrestris, Muhl. Cat. 42. T. trijugatus, 



Nutt. Gen. i. 277, but fruit wrong. Kallstroemia maxima, Torr. & Gray, Fl. i. 213; Gray, 



Gen. 111. ii. 118, t. 146 ; Engler in Mart. Fl. Bras. xii. pt. 2, 71. — Texas 3 to Arizona and 



borders of California; and naturalized eastward to Georgia aud Florida. (Mex., S. 



Am., &c.) 



1 Description somewhat amplified to exclude more clearly the next following species. 



2 \dd «vn. Knlhtvamia Californicn, A. M. Vail, Rnll. Torr. Club, xxii. 2:S0. 



3 Northward to Oklahoma Territory, where a noxious weed, ace. to Carleton, and Kansas, bmylh, 

 Hitchcock. 



