BOSACEiS. (rose family.) 307 



9. AORIIVIOBfIA, L. Agrimony. 



Calyx-tube top-shaped, having under the 5-fid, at length connivent 

 limb, numerous hooked spines, growing longer and harder in fruit. 

 Petals 5. Stamens 15, inserted with the stamens on the ring at the 

 calyx-throat. Carpels 3, with terminal style. Akene by abortion 1, 

 enclosed in the indurated calyx — Tall, perennial herbs, with flowers in 

 terminal, spike-like racemes, the short pedicel 2-bracted at its middle ; 

 fruit pendulous. 



A. Eupatoria, L. If Common Agrimony. .3 to .6. Leaves 



interruptedly pinnate, larger leaflets oblong, coarsely serrate, the small- 

 er ovate, all canescent below. Spike wand-like, often interrupted 

 below ; fruiting calyx deeply grooved to base ; outer spines spreading 



— Summer — Thickets and fields ; common, especially in mountains. 



10. POTERIUIW, L. Burnet. 



Flowers polygamous. Calyx-tube 2-bracted at base, limb 4-part- 

 ed. Stamens 20-30, inserted on the glandular ring at the throat. Car- 

 pels 2-3, style terminal ; stigma brush-like, with filiform divisions ; 

 ovule reflexed. Akenes 2-3, included in calyx-tube. Perennial herbs, 

 or shrubs with pinnate leaves, and sessile, capitate or spiked flowers, 

 the pistillate above, and staminate or hermaphrodite below. 



* Unarmed herbs, with .1 to .S long lower leaves, round, ovate, or oblong, 



incised-dentate leaflets, capitate, descending inflorescence, and 

 indurated fruiting calyx. 



1. P. Tillosum, S. et S. 2f Leaflets minute. Heads smaller 

 than P. Sanguisorba, in a stiff, racemed panicle ; fruit .0015 to .002 long, 

 oblong-tetragonal, margined at angles, obsoletely reticulate at face, and 

 beset with soft, short, rusty-golden wool — Summer — Between Surug and 

 Urfa. 



2. P. compactum, Boiss. % In tufted clumps, .05 to .10 broad, 

 sparingly branched below. Heads few-flowered, small ; fruit .0015 

 long, elliptical, obtusely quadrangular, smoothish — Summer — In Rho- 

 dodendron patches in subalpine region between Keniseh and Sunnin. 



3. P. Oaillardoti, Boiss. 21 Heads in a long, loose, racemed 

 panicle; fruit .0015 long, elliptical, white margined at angles, ^i^^- 

 wrinhled, little or not at all muricate — Summer — Dry rocks ; Lebanon, 

 Coelesyria, Antilebanon, Amanus, and northward. 



4. P. muricatum, Spach. If Heads paniculate ; fruit .003 long, 

 oblong, angles crested, nearly entire, face crested, muricate — Smnmer — 

 Grassy places ; Galilee to Lebanon, Aintab, and northward. 



5. P. Terrucosum, Spach. 2^ Heads corymbose-paniculate ; 

 fruits .004 long, ovate or spherical, obsoletely 4-angled, beset with elon- 

 gated, obtuse tubercles, crests of angles indistinct, tubercled lihe those of face 



— Summer — Common. 



* * Thorny shrubs, with apple-like fruiting calyx, and ascending, spiked 

 inflorescence, leaves less than . 1 long, leaflets minute, pubescent beneath. 



6. P. spino§uin, L. 5 Thorny Burnet. Billdn. Branches ending 

 in dichotomous thorns. Spikes terminal, short-peduncled or sessile. 



