Spirjsa. XLVllI. ROSACEA. 265 



18. SANGUIS ORB A. 

 Lat. sanguis, sorbere, q. d. to ubsorl) blood ; the pliuit U eslecmed a vulnerac- 



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

 ; stamens 4, opposite the calyx segments ; filaments dilated upwards ; 

 style 1, filiform ; aclienium dry, included in the calyx. — Herbs vnth 

 unequally pinnate leaves. 



S, Canadensis. BunM Saxifrage. 



Glabrous; Ifts. oblong, cordate, obtuse, serrate; spikes dense, cylindric, 

 very long ; sta. much longer than the calyx.— Tj. in wet meadows, U. S. and 

 Brit. Am., and cultivated in gardens. Stem 2— 3f high, smooth, striate, spar- 

 ingly branched. Stipules lealV, serrate. Leaflets 2 — 1' long, j— i as wide, 

 pedolate, mostly stipellate. Spikes 3— G' long, terminating the long, naked 

 branches. Bracteoles 3. Calyx greenish white, resembling a corolla. Aug. 



19. POTERIUM. 



Literally a drinking vessel, and hence a beverage ; fronti the use of the plant. 



Fls. (? • Calyx tube contracted at the mouth, 3-bracteate, limb 4- 

 parted ; petals ; stamens 20 — 30 ; ovaries 2 ; style filiform ; ache- 

 nia dry, included in the calyx. — Herbs loith unequally pinnate leaves. 



P. SANGUISORBA. Bumct. 



Herbaceous ; si. unarmed, angular, and with the leaves, smooth ; Ifts. 

 7 — 11, ovate or roundish, deeply serrate ; spikes or hds. subglobose, the lower 

 flowers staminate. — % Occasionally cultivated as a salad, but is now less valued 

 in medicine than tbrmerly. It is said by Hooker to be native about Lake Huron. 



20. AGRIMONIA. 

 Gr. avpos, a field, novos, alone ; a name of dignity for its medicinal qualities. 



Calyx tube turbinate, contracted at the throat, armed with hooked 

 bristles above, limb 5-cleft ; petals 5 ; stamens 12 — 15 ; ovaries 2 ; 

 styles terminal ; achenia included in the indurated tube of the calyx. 

 — % Lvs. pi?mately divided. Fls. yellow, in long, slender racemes. 



1. A. EuPATORiA. Agrimony. 



Hirsute ; lvs. interruptedly piimate, upper ones 3-foliate ; Ifts. ovate, oval 

 or oval-lanceolate, coarsely dentate ; stip. large, dentate ; pet. twice longer than 

 the calyx.— Road sides, borders of fields. Can. and U. S., common. Stem 1 — 3f 

 high, branching, leal'v. Leaflets 3, 5, 7, with small ones interposed, nearly 

 smooth beneath, U— 3' long, \ as wide, sessile, terminal one with a petiolule 

 1 — 3" long. Racemes 6 — 12' long, spicate. Flowers yellow, about 4" diam., 

 on very short pedicels. Calyx tube curiously fluted with 10 ribs, and sur- 

 mounted with reddish, hooked bri.stles. Jl. 



13. hirsuta. Torr. — Smaller and more haiiy. 



y. parvifiora. Hook. (A. parviflora. />C.)— Less hairy ;/5. smaller, on longer 

 pedicels. 



2. A. PARVIFLORA. Ait. (A. suaveolens. Ph.) 



St. and petioles hirsute ; Its. interruptedly pinnate ; Ifts. numerous, crowded, 

 pubescent beneath, linear-lanceolate, equally and incisely serrate ; stip. acutely 

 incised; roc. spicate-virgate ; Jls. small; pet. longer than calyx; fr. hispid. — 

 Woods and dry meadows, Penn. ! to S. Car. W. to la. and Tenn. "Stem 3 — it' 

 high, the hairs spreading, brownish and glandular. Leaflets 2 — 3' by J — i', 

 with smaller ones intermixed. Petals yellow. The plant has an agreeable 

 balsamic odor. Aug. 



21. SPIR^A. 

 G-r. (rneipa, a cord or wreath ; the flowers are, or may bo tised in garlands. 



Calyx 5-cleft, persistent; petals 5, roundish; stamens 10 — 50, 

 exserted; carpels distinct, 3 — 12, follicular, 1-celled, 1 — 2-valved, 

 1 — 10-seeded ; styles terminal. — % Unarmed shrubs or herbs. Branches 

 and lvs. alternate. Fls. white or rose-color, never yellow. 



