Order 47.— ROSACEA. 325 



a deadly poison, residing chiefly in the kernels. — Of the Rosacea;, ns ornamental flowering shrubs. 

 It is scarcely necessary to speak, neither of its many delicious fruits, ns the Apple, Pear, Quince, 

 Apricot, Peach, Plum, Cherry, Strawberry, Blackberry and Raspberry. 



SUBORDERS, TRICES AND GENERA. 

 J Suborder I. SAXGUISORBE/E. Carpels 1 (rarely 2— I). Petals 0. Herbs, (a) 



a Stamens 1 to 4, stylo lateral. Flowers scattered Aloiiemilla 1 



a Stamens 4, stylo terminal. Flowers in dense spikes Sanguiso;-.ba 2 



a Stamens CO, style terminal, stigma fringed. Fls. spicate Poterium 3 



$ Suborder II. OHETSOBALANEuE. Carpel 1, style lateral Petals 5. 



Shrubs ClIRYSOBALANU.M. & 



§ Suborder III. AMYGDALE.E. Carpel 1, style terminal. Pet. 5. Trees, &c. (fc) 



b Stone smooth, globular. Fruit smooth but not glaucous Cerasus. 5 



b Stone smooth, flattened. Fruit, glaucous with bloom, or downy Pkuni'3 * 6 



b Stone roughened with pits and furrows. — Fruit pulpy Pef.sica 7 



— Fruit dry Amygdalus 3 



J Suborder IT. POMEyE. Carpels 2 to 5, consolidated with the calyx. Fr. a pome, (c) 



C Ovary half-superior. 2-carpelcd. Leaves very thick, lucid Photina 9 



C Ovary inferior, — Petals bearded. Radicle retracted Eryobotrya 10 



— Petals smooth, — oblong-spatulate A.uelanciher 11 



— roundish. — Carpels 1 -seeded Crat.egu3 12 



— Carpels 2-seeded Pyrus 13 



— Carpels co-seeded Cydonia 14 



§ Suborder V. R0SEJ3. Carpels 2 to 50, free, in an open or closed calyx. (*) 



* Tribe 1. Roside.£. Carp. 1 -seeded acheuia inclosed in the calyx tube, (d) 



* Tribe 2. Fkagaride.e. Carp. 1 -seeded. Achenia dry or pulpy in an open calyx, (e) 



* Tribe 3. Si'iride-e. Carpels several-seeded foil. cles in an open calyx, (f) 



d Carpels many, in the fleshy calyx. Fls. often double Rosa. 15 



d Carpels 2 only, in the dry, fluted, echinate calyx Agrimonia. 16 



e Styles persistent on tho dry achenia. Petals 8 or 9 Dryas. IT 



6 Styles persistent on the dry achenia. Petals 5 Geum. 13 



e Styles deciduous, — Calyx bractless. Fr. a heap of pulpy achenia Rubus. 1J 



— Calyx bractless. Ach. dryish. Sepals unequal Dalibarda. 20 



— Calyx bractless or minutely bracteoled. Sep. equal.. Waldsteinia. 21 



— Calyx bractcolate,— Receptacle pulpy, srlobular, red.FKAGARiA. 23 



— Recept. spongy,glob.Fls. purplc.CoM arum. 23 



— Receptacle dry. — Stamens CO . . Pote.ntilla. 24 



— Stamens 5.. .Sibbaldia. 25 



f Follicles 2 to 10-seeded, Petals obovate, cyanic Spiraea. 28 



f Follicles 2 to 4-seedcd. Petals lance-linear, cyanic Gillenia. 27 



f Follicles 1-seeded. Petals multiplied, orange-yellow Kerria. 23 



\. ALCHEMIL'LA, L. Ladies' Mantle. (The plant is called in 

 Arabic dlkemehjch.) Calyx 4-toothcd, with 4 external bracteolcs; pe- 

 tals 0; stamens 1 to 4, carpels (1 to 4) mostly solitary, with the stylo 

 lateral, stigma capitate ; seed suspended. — Herbs with palmatc-lobed or 

 incised lvs. and small green lis. 



1 A. arvensis Scop. Parsley Piert. Lvs. incisely 3-lobed or parted, tho seg- 

 ments 2 or 3-cleft, pubescent, cuneate at base; fls. axillary, clustered. — (f) Wasto 

 grounds, E. Va. A worthless weed, so small as to be easily overlooked. 



2 A. alpirms L. Lvs. radical, silky beneath, digitately 5 to 7-foliate, segm. ob- 

 lanceolate, cuneiform at base, incisely serrate at apex; fls. corymbous. — "On tho 

 peaks of high mts., Vt. and N. H." (Pursh). But the plant has never been re- 

 discovered there. It is an elegant plant, sometimes cultivated. Common in Eur. 



2. SANGUISOR'BA, L. Burnet. Saxifrage. (Lat. sanguis, sor- 

 berc, to absorb blood ; the plant is esteemed a vulnerary.) Calyx tube 

 4-sided, 2 or 3 bracted at base; limb 4-parted ; petals ; stamens 4, 

 opposite the calyx segments; filaments dilated upward ; style 1, filiform; 

 acnenium dry, included iu the calyx. — Herbs with unequally pinnate 

 ivs. Fls. in dense spikes. 



