Acaena elongata L.

Acaena elongata L. Mant. 200. 1771
Ancistrum elongatum Poir. in Lam. Encyc. Suppl. 1: 345. 1810. Acaena elongata lappacea Kuntze, Rev. Gen. 213. 1891. Acaena elongata gracilis Bitter, Bibl. Bot. 17 74 : 30. 1910.
A branched under-shrub with brown or purple, at last flaky bark; leaves with 9-19 leaflets; stipules linear-lanceolate, adnate to the petioles, ciliate; leaflets oval or elliptic, acute at both ends, 8-15 mm. long, sharply serrate, with obliquely-ovate teeth directed forward, somewhat leathery, glabrous and shining above, paler and silky-strigose along the veins beneath ; racemes axillary, lax, in fruit 2-3 dm. long; peduncles sparingly pubescent; flowers subsessile, 3-bracteate; hypanthium ellipsoid, verrucose-echinate, slightly villous when young; calyx 4-cleft, its lobes greenish, ovate, concave, fully 1 mm. long, spreading; stamens 3-4; filaments slightly shorter than the calyx-lobes; anthers dark-purple, didymous, opening longitudinally; style short; stigma many-cleft with short lobes; fruit short-pedicelled, nodding and ellipsoid, 6-8.5 mm. long, with numerous spines, in age glabrous or nearly so; spines brown or wine-colored, 2-3 mm. long, usually with 3 barbs at the apex.
Type locality : Mexico.
Distribution: Mountains, from Mexico to Colombia.

Acaena agrimonioides H.B.K. Nov. Gen. & Sp. 6: 231. 1823
Suffruticose (?) perennial ; stems with dark-purple glabrous bark; leaves with 9-13 leaflets; stipules linear-lanceolate, adnate to the petioles, glabrous; leaflets sessile, the terminal one petioluled, oblong, acute at both ends, coarsely serrate, glabrous, pubescent on the lower surface when young, the pubescence usually remaining along the midrib, 15-20 mm. long, about 6 mm. wide; lower leaflets gradually becoming smaller; racemes axillary, lax, in fruit often 2-3 dm. long; flowers short-pedicelled, the lower far remote, 3-bracted; hypanthium ellipsoid, echinate; calyx 3-4-cleft; lobes ovate, concave, glabrous; stamens 3; style short, slightly exserted; stigma many-cleft; fruit drooping, ellipsoid, pubescent, 8 mm. long, covered all over with spines, 3-barbed at the apex.
Type locauty: Cold place near TianguiUo, Mexico. Distribution: Known only from the type locality.