Sprirza. XLVI. ROSACEA. 255 
18. SANGUISORBA. 
Lat. sanguis, sorbere, gq. d. to absorb blood; the plant is esteemed a vulnerary. 
Calyx tube 4-sided, 2 or 3-bracted at base; limb 4-parted; petals 
0; stamens 4, opposite the calyx segments; filaments dilated upwards; 
style 1, filiform ; achenium dry, included in the calyx.—Herbs with 
unequally pinnate leaves. 
S. Canavensis. Burnet Sazifrage. 
Glabrous; /fis. oblong, cordate, obtuse, serrate; spikes dense, cylindric, 
very long; sta. much longer than the calyx.—2| in wet meadows, U. S. and 
Brit. Am., and cultivated in gardens. Stem 2—3f high, smooth, striate, spar- 
ingly branched. Stipules leafy, serrate. Leaflets 2—4/ long, 4—4 as wide, 
petiolate, mostly stipellate. Spikes 3—6’ long, terminating the long, naked 
branches. Bracteoles 3. Calyx greenish white, resembling a corolla. Aug. 
19. POTERIUM. 
Liferally a drinking vessel, and hence a.beverage; from. the use of the plant. 
Fils. . Calyx tube contracted at the mouth, 3-bracteate, limb 4- 
parted ; petals 0; stamens 20—30 ; ovaries 2; style filiform; ache- 
nia dry, included in the calyx Herbs with unequally pinnate leaves. 
P. sancuisorBa. Burnet. 
Herbaceous; st. unarmed, angular, and with the leaves, smooth; Jfts. 
“7—11, ovate or roundish, deeply serrate; spikes or hds. subglobose, the lower 
flowers staminate.—2 Occasionally cultivated asa salad, but is now less valued 
in medicine than formerly. Itis said by Hooker to be native about Lake Huron. 
20. AGRIMONIA. 
Gr. .aypos, a field, povos, 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. 
—1U Lvs. pinnately diwided. Fis. yellow, in long, slender racemes. 
“1, A. Eupatoria. Agrimony. 
Hirsute ; dvs. interruptedly pinnate, upper ones 3-foliate ; Jfts. 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, leafy. Leaflets 3, 5, '7, with small ones interposed, nearly 
smooth beneath, 13—3! long, 3 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 bristles. Jl. 
B. hirsuta. 'Torr.—Smaller and more hairy. 
y: PEs: Hook. (A. parviflora. DC.)—Less hairy ; fls. smaller, on longer 
edicels. 
: 2. A. paRvIFLORA. Ait. (A. suaveolens. Ph.) 
St. and petioles hirsute ; vs. interruptedly pinnate; /fts. numerous, crowded, 
pubescent beneath, linear-lanceolate, equally and incisely serrate; stip. acutely 
incised; rac. spicate-virgate ; fls. small; pet. longer than calyx; fr. hispid.— 
‘Woods and dry meadows, Penn.! to S. Car. W. to Ia. and Tenn. Stem 3—4f 
high, the hairs spreading, brownish and glandular. Leaflets 2—3/ by }—3’, 
with smaller ones intermixed. Petals yellow. The plant has an agreeable 
balsamic odor. Aug. 
21. SPIRAA. 
Gr. oreipa, a cord or wreath; the flowers are, or may be used 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.—2 Unarmed shrubs or herbs. Branches 
and Ivs. alternate. ls. white or rose-color, nevgr yellow. 
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