Dalea sericea Lag.

Parosela sericea (Lag.) Rose, Contr. U. S. Nat. Herb 10: 105. 1906.
Dalea sericea Lag. Gen. & Sp. Nov. 23. 1816.
Dalea longipes Moc. & Sesse; DC. Prodr. 2: 245. as synonym. 1825. ? Dalea Alopecurus Sesse & Moc; G. Don, Gen. Hist. 2: 223. 1832.* Dalea Alopecurus Moric. Mem. Soc. Geneve 7: 250. 1836. Psoralea Alopecurus Sessfe & Moc. PI. Nov. Hisp. 120. 1889*
A perennial, somewhat suffrutescent at the base; stems 5-10 dm. high, silky-pubescent with appressed or spreading hairs, leafy more than half its length, mostly erect; leaves ascending, 3-6 cm. long; stipules subulate-filiform, 1 cm. long or more, sericeous; petiole about 1 cm. long; rachis sericeous, apparently not glandular-dotted; leaflets 7-11, elliptic, acute at both ends, more or less cuspidate-acuminate at the apex, 1-2 cm. long, silky on both sides, obscurely glandular-dotted; peduncles terminal, 1.5-4 dm. long; spikes oblong-cylindfic, dense, 2-7 cm. long, 1.5-2 cm. thick; bracts lanceolate, attenuate, silky, usually slightly, sometimes broadly scarious-margined at the base, or the lowest subulate and not at all scarious; calyx-tube turbi-
* Both G. Don's description and that of Sesse & Moc. agree well with this plant, except that the plant is said to be an annual. nate, 3 mm. long, silky; lobes filiform, with a broad base, plumose, much exceeding the tube; corolla bluish-purple or partly white; blade of the banner suborbicular, 3-4 mm. long, slightly cordate at the base, the claw 4 mm. long; blades of the wings 5 mm. long, those of the keelpetals 6-7 mm. long, the claws of both about 3 mm. long; pods silky.
Type locality: Mexico.
Distribution: Durango to Guatemala.

Parosela gracilis (Kunth) Rose, Contr. U. S. Nat Herb. 10: 105. 1906.
Dalea sericea G. Don. Gen. Hist. 2: 223. 1832. Not D. sericea Lag. 1816.
Dalea gracilis Kunth, Mimoses 166. 1824.
Psoralea sericea Sesse & Moc. PI. Nov. Hisp. 121. 1889.
A perennial, with a woody caudex; stems decumbent at the base, densely leafy, less than half their length, 2-3 dm. high, silky-strigose ; leaves spreading, 1.5-4 cm. long; stipules subulate, 4—5 mm. long; petiole 5-10 mm. long; rachis sericeous, not glandular; leaflets 5-19, elliptic or oblanceolate, acute at each end, 5-15 mm. long, silky on both sides; peduncles terminal, 1-2 dm. high; spikes dense, oblong, 2-5 cm. long, 12-15 mm. thick; bracts lanceolate, attenuate, silky, scarcely scarious-margined; calyx-tube turbinate, 2.5 mm. long, silky, 10-ribbed; lobes filiform from a broad base, longer than the tube; blade of the banner rounded, subcordate, wavy, 4 mm. long, the claw 2 mm. long; blades of the wings 5-6 mm. long, those of the keelpetals broader, 6-7 mm. long, the claws of both 2 mm. long; pod villous.
Type locality: Near Guanajuato.
Distribution: Guanajuato to Veracruz and Puebla.

Dalea sericea là một loài thực vật có hoa trong họ Đậu. Loài này được Lag. miêu tả khoa học đầu tiên.