248 



ROSACEAE. 



Vol. II. 



5. PORTERANTHUS Britton, Mem. Torn Club 4: 115. 1894. 

 [GiLLENiA Moencli, Metli. Suppl. 286. 1802. Not Gillena Adans. 176.^.] 



Erect perennial herbs, with nearly sessile stipulate 3-foliolate or 3-parted leave;, and 

 white or pinkish perfect long-pedicelled flowers in loose terminal panicles. Calyx cylindric, 

 persistent, narrowed at the throat, lo-nerved, 5-toothed, the teeth imbricated, slightly glandu- 

 lar. Petals 5, linear-lanceolate, spreading, convolute in the bud, somewhat unequal, inserted 

 on the calyx. Stamens 10-20, included; filaments short; anthers large. Carpels S, villous- 

 pubescent, opposite the calyx-lobes. Ovules ascending; style filiform. Follicles 5, 2-4-seeded. 

 Seeds with endosperm. [In honor of Thomas Conrad Porter, Professor in Lafayette College.] 



A genus of 2 species, of North America. Type species; Porteranthus trifoliatus (L.) Britton. 

 Leaflets serrate; stipules subulate, mainly entire. i. P. trifoliatus. 



Leaflets incised; stipules broad, foliaceous, incised. 2. P.stipulatus. 



I. Porteranthus trifoliatus (L.) Britton. 



Indian Physic. Bowman's-root. False 



Ipecac. Fig. 2223. 



Spiraea trifoliata L. Sp. PI. 490. 1753. 



Gillenia trifoliata Moench, Meth. Suppl. 286. 1802. 



P. trifoliatus Britton, Mem. Torr. Club 5 : 115. 1894. 



Herbaceous from a perennial root, erect, branch- 

 ing, 2°-4° high, glabrous or somewhat pubescent. 

 Stipules subulate, 2"-4" long, entire or serrate; 

 leaflets short-stalked, oval, ovate, lanceolate or 

 slightly obovate, acuminate at the apex, narrowed 

 at the base, 2'-3' long, irregularly serrate ; upper 

 leaves often 3-lobed, or sometimes merely serrate; 

 panicles few-flowered; pedicels slender; petals 

 white or pinkish, 5"-6" long; calyx reddish; pods 

 pubescent, subulate-tipped, little exceeding the 

 calyx. 



Woodlands, Ontario and New York to Michigan, 

 Georgia and Missouri. Ascends to 4500 ft. in North 

 Carolina. Stipules rarely larger, lanceolate. Meadow- 

 sweet. Indian hippo. Western dropwort. May-July. 



2. Porteranthus stipulatus (Muhl.) Brit- 

 ton. American Ipecac. Fig. 2224. 



Spiraea stipulata Muhl. ; Willd. Enum. 542. 1809. 



Gillenia slipiilacea Nutt. Gen. i : 307. 1818. 



P. stipulatus Britton, Mem. Torr. Club 5: 115. 1894. 



Resembling the preceding species, but gener- 

 ally more pubescent. Stipules foliaceous, broad, 

 ovate, acuminate or acute, 4"-i2" long, sharply 

 incised-serrate ; leaflets commonly narrower than 

 those of the preceding, incised-serrate, or those 

 of the lower leaves deeply pinnatifid; flowers 

 commonly fewer and slightly smaller; pods less 

 pubescent or sometimes quite glabrous. 



In woods, western New York to Indiana and Kan- 

 sas, south to Georgia, Louisiana and Oklahoma. In- 

 dian physic. June-July. 



6. FILIPENDULA [Tourn.] Mill. Card. Diet. Abr. Ed. 4. 1754. 

 [Ulmaria Hill, Hort. Kew. 213. 1768.] 

 Tall perennial herbs, w'ith alternate petioled pinnately divided stipulate leaves, and small 

 white, pink or purple perfect flowers in large cymose panicles. Calyx 5-lobed. Petals S, 

 clawed. Stamens numerous, inserted on the flat or slightly concave receptacle ; filaments 

 narrowed at the base. Pistils about 10 (S-iS). distinct; ovary 2-ovuled. Ripe carpels capsu- 

 lar, indehiscent, i-seeded. Seed pendulous. [Latin, a hanging thread.] 



About ro species, natives of the north temperate zone. Besides the following, 2 others occur in 

 northwestern America. Type species : Spiraea Filipendula L. 



