u 



NATURAL HISTORY OF PLANTS. 



V. NASTURTIUM SEEIES. 



The flowers of the Nasturtiums ^ (fig. 31-39) are hermaphrodite 

 and irregular. They have a concave receptacle, iu the form of a 

 porringer, the posterior part being prolonged into a spur of variable 



Tropauhim mojiis. 



Fi";. 31. Florifei'Ous branch. 



form and size ^. Upon the edges of the cnp arc inserted five sepals ^, 

 quiucuucially imbricate or valvate in the bud (sepal 2 being posterior 

 and corresponding to the spur). The petals are often the same iu 



' L. Oni. n. 4Gr>.— J. Gvii. 2fin ; in Mem. 

 Mm. V. 230.— Lamk." Diet. i. 610 ; Siippl. 

 ii. 86 ; 111. t. 277.— Tuui'. in Diet. Sc. KnI. 

 All. t. 133.— DC. P/wfr. i. 683.— SrACH, Ahi'^ 

 (i lliiffon iii. 4. — Endl. Qeii. n. 6003. — rAVEU, 

 Oi-gamg. 77, t. 16. — Chat, in Ann. Sc. Xut. 

 aer. 4, v. 283.— H. Bn. in Fiti/n- Fion. Nat. 

 403. — 15. H, Ocn. 274, n. 7. — Sciinizl. Icoioffi: 

 L 258.— Lem. et Done. Tr. 0<!n. 353 (incl. : 

 Anixoecnlra Don, Chijmoenrpus Don, Jtliu/allcmi 



C'OMMERS.). — Carihnnhiilmn T. Inst. 430, t. 224. 

 — Adans. Fam. dcs 11. ii. 338. — Acriiioln 

 I'oERH. (ex Adans.). 



2 It is free, sometimes wide and not vcrj' deep, 

 sometimes very large, straipfht or curbed, glan- 

 dular at the bottom ; so that the eavity often 

 contains a sweet nectar. It is sometimes want- 

 ing in some cultivated flowers ; in other cases 

 it is more or less deeply lined. 



' Often petiiloid, coloured. 



