NATURAL ORDERS. 



249 



or 4, colored inside. Petals 3 or 4, alternate with the sepals. 

 Stamens liypogynous, definite or indefinite ; filaments slender ; 

 antliers linear, introrse. Carpels 2 or more. Fruit indeliiscent. 

 Seeds jDendnlous ; embryo minute, inclosed in a membraneous 

 bag at the extremity of abundant fleshy .albumen. 



Genus. — Hydropeltis. 



406. Nelumbiaceje, the Water-hean Tribe. — Aquatic Tierbs^ 

 with show J fiowers, and peltate, floating leaves. Sepals 4 or 5, 

 deciduous. Petals numerous, in several rows, inserted into the 

 base of the torus. Stamens numerous, in several rows ; filaments 

 petaloid ; anthers adnate and introrse. Carpels numerous, im- 

 mersed in hollows of the large fleshy torus, in fruit forming 

 hard, round mtts. Seeds solitary, destitute of albumen ; embryo 

 large, with 2 fleshy cotyledons. 



Genus. — Nelumbium. 



407. IsTy^iphjeace^, tlie Water-Lily Tribe. — Aquatic herbs. 

 Leaves peltate or cordate, arising from a prostrate trunk or 

 rhizoma, and raised above the water on long stalks, or floating 

 on the surface. Calyx and corolla composed of several or nu- 

 merous sepals and petals, which gradually pass into each other, 

 the inner series passing into stamens. Stamens numerous, in 

 several rows, inserted above or with the petals ; many of the 

 filaments petaloid ; anthers adnate, introrse. Ovary many- 

 celled, many-seeded. Fruit indehiscent, crowned by the radi- 

 ate stigmas. Seeds very numerous, covering the spongy dis- 

 sepiments. Emhryo small, inclosed in a membraneous bag, and 

 half immersed in the farinaceous albumen. 



a. Properties : some are astringent and bitter, while others are said to be seda 

 tivp. 



Genera. — NymphaBa, Nuphar, Victoria. Fig. 1T3. 



Fig. 173, a, 'NYTH.vnjEk odorata 

 (pond-lily) ; b, a petaloid sta- 

 men or inner petal bearing an 

 anther at its tip ; c, a pistil, the 

 floral envelopes, and all but one 

 stamen removed ; (/, a vertical 

 section of the pistil; e, trans- 

 verse section of the base of a 

 seed, cutting through the sac 

 and embryo. 



408. Sarraceniace^, 

 the Side-saddle flower 

 Tribe. — Perennial herbs^ 

 found in boggy places. 

 Leaves radical and hol- 

 low, pitcher or trumpet 

 shaped, i^^o^^^^r solitary, 

 on a long scape. Sepals 



