Dicotyh or Exogenous Plants. 65 



Ru'-bus cu-ne-i-fo'li-us Ph. Sand Blackberry. — Shrubby, 1-3 ft. high, 

 armed with stout, recurved prickles ; peduncles 2-4-flowered ; petals 

 large. 



10. Genus FRA-GA'-RI-A. — Receptacle in fruit much enlarged and 

 ■conical, becoming pulpy and scarlet ; leaves radical ; leaflets 3, coarsely 

 serrate. 



A. Achenes imbedded in the deeply-pitted fruiting receptacle. 



Fra-ga'-ri-a vir-gin-i-a'-na Mill. Wild Strawberry. — Receptacle usually 

 "with a narrow neck, calyx becoming erect after flowering, and conni- 

 vent over the hairj- receptacle when sterile ; leaflets firm ; hairs of the 

 scape and especially of the pedicels silky and appressed. 



Fra-ga'-ri-a vir-gin-i-a'-na il-li-no-en'-sis Prince. Wild Strawberry. — A 

 coarser or larger plant, the villous hairs of the scape and pedicels 

 widely spreading. 



A. Achenes not sunk ifipits, siiperjicial on the glabrous i-eceptacle. 



Fra-ga'-ri-a ves'-ca 1,. Strawberry. — Calyx remaining spreading or 

 reflexed ; hairs on the scape mostly widely spreading, on the pedicels 

 appressed; leaflets thin, even the upper face strongly marked by the 

 veins. 



Fra-ga'-ri-a a-mer-i-ca'-na (Porter) Rritt. Strawberry. — Much like 

 the preceding, but plant softly villous, scape and peduncles slender, 

 flowers small; fruit of a light pink color. 



11. Genus PO-TEN-TIL'-LA. — Herbs or rarely .shrubs; leaves com- 

 pound, flowers solitary or cymose ; calyx 5-cleft, with 5 bractlets, ap- 

 pearing 10-cleft ; receptacle dry. 



A. Petals whitish or cream-color, broad, sttrpassing the calyx. 



Po-ten-til'-la ar-gu'-ta Ph. Cinque-foil : Five-finger. — Stems erect, 1-4 

 ft. high, leaflets 7-11, downy beneath. 



A. Petals pale-yellow, not surpassing the calyx. 



Po-ten-til'-la mon-spe-li-en'-sisL. {P.norvegica'L.) Cinque-foil; Five- 

 finger. — Stout, erect, hirsute, j-^-2 ft. high; leaves ternate, calyx large. 



A. Petals bright or ligiit-yelloTV, larger than the lobes of the calyx. 

 b. Inflorescence cymose^ 



Po-ten-til'-la ar-gen'-te-a L. Silvery Cinque-foil.— Leaves palmate, 

 leaflets 3-5 ; white woolly ; herb. 



