ROSACEAE (ROSE FAMILY) 493 



19. DALIBARDA Kalm. 



Calyx deeply 5-6-parted, 3 of the divisions larger and toothed. Petals 5, ses- 

 sile, deciduous. Stamens many. Ovaries 6-10, becoming nearly dry seed-like 

 drupes; styles terminal, deciduous. Low unarmed perennials, with creeping 

 and densely tufted stems or rootstocks, and roundish-heart-shaped crenate leaves 

 on slender petioles. Flowers of 2 kinds, a few upright long-peduncled usually 

 sterile ones with white petals, and numerous fertile apetalous ones on short 

 curved peduncles. (Named for Thomas Francois Dalibard, a French botanist 

 of the time of Linnaeus.) 



1. D. repens L. Downy ; sepals of the petaliferous flowers spreading, of the 

 cleistogamous ones converging and inclosing the fruit. Woods, N. B. to Ont., 

 s. to N. J., Pa., O., Mich., and Minn. June-Aug. 



20. ALCHEMfLLA L. LADY'S MANTLE 



Calyx-tube inversely conical, contracted at the throat ; limb 4-parted with as 

 many alternate accessory lobes. Petals none. Stamens 1-4. Pistils 1-4 ; the 

 slender style arising from near the base ; achenes included in the tube of the 

 persistent calyx. Low herbs, with palmately lobed or compound leaves, and 

 small corymbed greenish flowers. (From Alkemelyeh, the Arabic name, having 

 reference to the silky pubescence of some species.) 



1. A. ARVENSIS Scop. (PARSLEY PIERT.) Small annual, 4-20 cm. high ; 

 leaves 3-parted, with the wedge-shaped lobes 2-3-cleft, pubescent ; flowers fasci- 

 cled opposite the axils. N. S. (according to Lawson) ; D. C. (where said to be 

 extinct) ; Va. to Tenn. and Ga. (Adv. from Eurasia.) 



2. A. PRATENSIS F. W. Schmidt. Perennial, 1-3 dm. high, from a stout 

 caudex ; leaves orbicular, 2-10 cm. in diameter, deeply cordate, finely serrate, 

 shallowly &-9-lobed; inflorescence paniculate; pedicels filiform. Dry road- 

 sides, etc., N. S., where locally abundant near coast ; also casual at Westford, 

 Mass. (Miss Fletcher). (Nat. from Eu.) 



21. AGRIM6NIA [Tourn.] L. AGRIMONY 



Calyx-tube top-shaped or hemispherical, the throat beset with hooked bristles, 

 indurated in fruit and inclosing 2 achenes ; the limb 6-clef t, closed after flower- 

 ing. Petals 5, yellow. Stamens 6-15. Styles terminal. Perennial herbs, 

 with interruptedly pinnate leaves, crenate-serrate leaflets, and small spicate- 

 racemose flowers. Bracts 3-cleft. (Name a corruption of Argemone. ) 



a. Fruiting calyx more or less top-shaped, deeply furrowed b. 



b. Leaflets (exclusive of the little intermediate ones) chiefly 5-9, ovate to 



obovate or elliptic-oblong. 



Rhachis of inflorescence covered with minute glandular puberulence 

 interspersed with long widely spreading hairs ; leaves sparingly 



pubescent beneath ; roots not thickened I. A. grypotepala. 



Rhachis appressed-villous or glandular-puberulent, without long 



widely spreading hairs. 



Roots not thickened ; lower surface of leaflets conspicuously resin- 

 ous-dotted, only the veins villous 2. A. ttlriata. 



Roots fusiform-thickened toward the end ; lower surface of leaflets 



velvety-tomentose, scarcely or not at all resinous-dotted. 

 Larger leaflets 5-9, oblong or elliptical ; fruiting calyx 4-5 mm. 



wide (exclusive of spreading hooks) 8. A.mollit. 



Larger leaflets 8-5, obovate ; fruiting calyx about 3 mm. wide 



(exclusive of hooks) 4. A. microcarpa. 



b. Leaflets (exclusive of little intermediate ones) 11-18, lanceolate to nar- 

 rowly lance-oblong 6. A. pnrv(flora. 



a. Fruiting calyx hemispherical, striped but scarcely furrowed . . .6. A. rontellata. 



1. A. grypose'pala Wallr. Tall (7-12 dm.); stem hirsute; leaflets large, 

 thin, smoothish, scarcely paler beneath ; fruiting calyx nearly 1 cm. long ; hooks 

 long, widely spreading, the outer deflexed. (A. Eupatoria Man. ed. 6, in part, 

 not L.; A. hirsuta Bicknell.) Thickets, ravines, etc., s. N. S. and centr. Me. 

 to Va., and westw. ; frequent. 



