42 DIALYPETALOUS EXOGENS 



(said to be perennial in its native country) ; smooth. Stem 3 to 6 or 8 

 feet long, branching and climbing. Leaves 2 to 3 inches in diameter ; petioles 3 to 6 

 inches long. Peduncles 1-flowered, mostly longer than the petioles. Flowers pale 

 yellowish- or reddish-orange, with dark purple stripes and spots. Carpels sulcate, 

 fleshy, finally subcoriaceous. 

 Hob. Gardens. Nat. of Peru. Fl. June. Fr. Aug. 



Obs. This is cultivated, both for show, and for the young fruit, 

 which is prepared as a condiment, and affords a tolerable substitute 

 for capers. 



ORDER XXV. LIMNANTHACEAE. 



Herbs; stems fleshy; leaves alternate, pinnately dissected, without stipules; flowers 

 regular, of 3 or 5 parts; sepals valvate, and petals convolute, in the bud; stamens 

 twice their number; fruit of 3 to 5 fleshy connate 1-seeded akenes; styles united; 

 seeds without albumen. 



73. FL,O V ERKEA, Wittd. 



[Dedicated to Henry Gustavus Floerke, a German Botanist.] 

 Sepals 3, connected at base, persistent. Petals 3, shorter than the 

 sepals. Ovaries 3, opposite the sepals, cohering at base. Style 

 central; stigmas 8. Akenes utricular, tuberculate, often only 1 or 2. 



1. F. prose rpiiiacoitles, Willd. Glabrous; stem terete; 

 leaves odd-pinnately dissected into 3 or 5 lance-oblong entire seg- 

 ments. 



F. uliginosa. Muhl. $ FL Cestr. ed. 2. p. 212. 

 PROSERPINACA-LIKE FLOERKEA. 



Annual. Stem 4 to 10 or 12 inches long, nearly simple, flaccid, finally procum- 

 bent. Leaflets, or segments, half an inch to an inch long ; common petioles 1 to 3 

 inches in length. Peduncles axillary, finally about an inch long, 1-flowered. 

 Petals white, alternate with, and scarcely half as long as the sepals. 

 Hob. Miry, shaded places : frequent. Fl. April Fr. May. 



ORDER XXVI. XANTHOXYLACEAE. 



Trees, or shrubs ; Uaves mostly alternate, compound, without stipules, or armed 

 with stipular prickles ; ./fotwers'polygamo-dioicous, regular, small: stamens as many, 

 or twice as many, as the sepals ; ovaries distinct, or 2-celled ; fruit various, bac- 

 cate, capsular, or samaroid ; seeds 1 or 2 in each carpel, albuminous. 



74. AIL-A^THUS. Desf. 



[Formed from Atlanta, the name it bears in its native country.] 

 Calyx 5-toothed. Petals 5, inserted with the 10 stamens, under a 

 hypogynous disk. Carpels 3 to 5, samaroid, tumid in the centre, 

 1 -celled, 1-seeded. Stigmas capitate, radiately 5-lobed. 



1. A. GLANDULO V SA, Desf. Leaves odd-pinnate ; leaflets oblong-lan- 

 ceolate, acuminate, coarsely dentate at base, with a gland on the 

 under side of each tooth. 

 GLANDULAR AILANTHUS. Chinese Sumach. Tree of Heaven. 



Stem 30 to 60 feet, or more, in height, much branched, but never ramifying dur- 

 ing growth. Leaflets 3 to 5 inches long, numerous (15 to 20 pairs, and a terminal 

 one). Flowers pale greenish-yellow, in terminal thyrsoid panicles. 

 Hob. Streets, and about houses. Nat. of China. Fl. June. Fr. Sept. 



Obs. This is not an ungraceful tree in its habit, but a disagree- 

 able one in its odor. It is also exceedingly troublesome in sending 



