POLYPETALOUS EXOGENOUS PLANTS. 285 



middle one oblong, conspicuously mucronate; the lateral 

 ones shorter, and often 2-3-lobed ; lateral divisions 2-parted ; 

 the segments deeply 2-3-lobed, and sinuate-toothed ; sterile 

 racemes as long as the leaves ; floivers scarcely on short 

 pedicels ; j^eduncle of fertile flowers scarcely as long as the 

 fruit ; ovary 3-celled, ovules erect from near the base of the 

 cell ; the young fruit thickly clothed with long, weak, and 

 soft smooth prickles. — Drummond, 



SICYOS, L. 



Flowers monoecious ; calyx flatfish, with 5 subulate or 

 minute teeth; petals 5, united below in a rotate corolla; 

 stamens 5, monadelphous or triadelphous ; ova?y 1-celled, 

 1-ovuled; style slender; stigma d', fruit membranaceous, 

 bristly, 1-seeded. — Aniiual herbs ; sterile and fertile flowers 

 mostly from the same axil. 



S. ANGULATUS, L. Plant hairy and clammy; leaves 

 thin, cordate, with 3-5 acuminate denticulate lobes; sterile 

 floivers racemose; the fertile ones in peduncled clusters, 

 whitish. 



55. SURIANA FAMILY. Order, Surianace^. 



A downy sJirub, with alternate crowded exstipulate leaves, 

 and perfect yellow flowers, in small axillary bracted ra- 

 cemes; calyx 5-parted, persistent, the base filled wath a 

 fleshy torus, which bears the ovaries, petals, and stamens; 

 petals 5, oblong-obovate ; stamens 10, hairy, the alternate 

 ones short and sterile; ovaries 5, distinct, with 2 erect 

 collateral orthotropous ovules in each ; styles 5, each arising 

 from the central angle of the ovary near the base, thickened 

 upward; carpels 1-seeded, indehiscent; seeds without al- 

 bumen ; embryo hooked. 



