384 NORTH AMERICAN FLORA [VorumME 22 
10. Lachemilla domingensis (Urb.) Rydberg. 
Alchemilla domingensis Urb. Symb. Antill. 5: 349. 1907. 
Creeping perennial; stem up to 2 dm. long, pubescent with long erect hairs, dark- 
brown or the upper portion purplish; lower leaves petioled, the upper sessile; stipules 
connate, divided into two or more linear divisions, pilose on the back and at the apex; 
petioles 5 mm. long or less; leaves tripartite to near the base, glabrous above, long-pilose 
beneath, 4-8 mm. long, cleft one third their length into 5-7 linear divisions; flowers in 
small clusters in the axils of the upper leaves, sessile or short pedicelled, white; hypan- 
thium short-obovate or obovate-globose, pubescent with erect hairs; bractlets 0.8 mm: long, 
lanceolate-linear, almost equaling the ovate or ovate-lanceolate sepals; stamens 2; fila- 
ments scarcely 0.3 mm. long; pistils 5, short-stipitate, carpels obliquely ovoid, brown. 
TYPE LOCALITY: Valle Nuevo, St. Domingo. 
DISTRIBUTION : Known only from the type locality. 
11. Lachemilla sibbaldiaefolia (H.B.K.) Rydberg. 
Alchemilla sibbaldiaefolia H.B.K. Nov. Gen. & Sp. 6: 225. 1824. 
Erect or ascending perennial; stem 2-4 dm. high, branched, appressed-silky, leafy; 
stipules adnate to the petioles, 3-6 mm. long, silky-strigose beneath, 2~4-cleft into linear 
or lanceolate divisions; petioles 4-8 mm. long; leaf-blades 3-parted to near the base; 
divisions cuneate-obovate, acute, the lateral ones of the lower leaves often deeply 2-cleft, 
acute, sharply serrate above the middle, entire below, sparingly strigose or in age glabrate 
and dark-green above, densely silky-strigose beneath, 1-2 cm. long; inflorescence mostly 
terminating the branches, the flowers short-pedicelled in small clusters; hypanthium 
urceolate, about 1 mm. long, strigose throughout, in fruit strongly constricted at the 
mouth; bractlets lanceolate, about equaling the ovate sepals, both strigose without and 
acute; filaments about half as long as the sepals; pistils 2 or 3, short-stipitate; achenes 
dark, glabrous and shining.. 
TYPE LOCALITY: Near Tianguilla between Toluca and the City of Mexico. 
DISTRIBUTION: Central Mexico. 
ILLUSTRATION : H.B.K. Nov. Gen. & Sp. 6: £1. 561. 
12. Lachemilla subalpestris (Rose) Rydberg. 
Alchemilla hirsuta alpesiris Cham. & Schlecht. Linnaea 5: 572. 1830. Not Alchemiila alpestris 
F. W. Schmidt. 1794. 
Alchemilla subalpestris Rose, Contr. U. S. Nat. Herb. 10: 96. 1906. 
Erect or ascending perennial; stems usually branched and leafy, hirsute with scattered 
spreading hairs or nearly glabrous, 1-4 dm. high; stipules adnate to the petioles and con- 
nate around the stem, deeply dissected into oblong or linear divisions ; lower leaves peti- 
oled; petioles 1-4 cm. long, hirsute with scattered hairs; blades orbicular or reniform in 
outline, 3-divided to near the base and the lateral divisions usually deeply 2-cleft ; divisions 
cuneate-obovate, 1-1.5 cm. long, sparingly hirsute on both sides or glabrate above, light- 
green, deeply dissected into oblong or linear lobes; blades of the upper stem-leaves, especi- 
ally those of the inflorescence, sessile, obovate, and dissected, together with the almost simi- 
lar stipules forming a perfoliate leaf; flowers nearly sessile, in small axillary clusters; 
hypanthium urceolate, in fruit almost round, glabrous, 0.75 mm. long; bractlets and sepals 
glabrous, ovate or lance-ovte, about 0.3 mm. long; pistils usually 2; achenes oval, gla- 
brous, nearly 1 mm. long. 
TYPE LOCALITY: Nevada de Toluca, Mexico. 
DISTRIBUTION : Mountains throughout Mexico. 
13. Lachemilla Bourgeaui Rydberg, sp. nov. 
Erect or ascending perennial; stem 2-4 dm. high, rather simple, sparingly hirsute; 
stipules adnate to the petioles, hirsute, cleft into lanceolate divisions; petioles of the lower 
leaves about 1 cm. long, those of the uppermost obsolete; leaf-blades 3-cleft to the base or 
in the lower leaves the lateral divisions again 2-cleft; divisions obovate-cuneate, furnished 
above with ovate or lanceolate teeth, sparingly hirsute beneath, glabrous or nearly so 
