Ki ■ ■ NATCH AL HISTORY OF PLANTti. 



above and within stigmatic papillœ. In each ovary cell, of which 

 one is posterior and the other two anterior, there is in the internal 

 angle a single descendent anatropoiis ovule, with micropylc directed 

 upwards and outwards.' The fruit is formed of tlu'ee achenes, which 

 are detached from the central axis at maturity presenting a dry, 



sometimes very thick , more 



T,-opœ..lmn {Clunmvarpn.) pcdophylhan. Or leSS SpOUgy ÙldehisCent 



raonospermous pericarp. 

 Under tlie coats of the seed 

 is contained a fleshy em- 

 bryo, the thick plano-convex 

 cotyledons surrounding by 

 their base a short superior 

 radicle. In some Nastur- 

 tiums of which the genus 

 Chi/mocarpus ~ has been 

 made (fig. 38, 39), the an- 

 terior petals are wanting or but little developed, and the fruit is 

 more fleshy than in the other species. This genus contains some 

 thirty species,^ all herbaceous, sometimes climbing, fleshy, sapid, 

 with alternate, petiolate, peltate or palmate leaves, angular, lobed or 

 dissected, exstipulate or more rarely accompanied by small sctiform 

 or dissected stipules. The flowers '^ are axillary, solitary or peduncu- 

 late. All are natives of South America, especially of the temperate 

 récrions. 



Fig. 39. Loni;-. scot, 

 of flower. 



' It has two coats. Upon the phenomena of 

 fecundation in the Nasturtiums ; upon their 

 emhryonal sac, and the curious tuhular direr- 

 ticiibim en cid de sac which this emits across the 

 ovule, on its back and a little below and outside 

 the micropyle, see : ScHLEiDiSN, in Nov. Act. 

 Nat. Cur. xix. 54, t. 8. — Schacht, in Ann. Sc. 

 Nnt. sér. 4, iv. 47. — Wilson, in Hook. Land. 

 Joiirn. ii. 623. — GiR. in Trans. Linn. Soe. xix. 

 161.— A. Dickson, in Edinb. New Phil. Journ. 

 XV. (1863), t. 4. 



2 Don, in Trans. Linn. Soc. xvii. 13, 145.— 

 ScHLEiD. in Nor. Act. Nat. Cur. xix. 56, t. 8, 

 fig. 126.— Endl. Oen. n. 6062.— H. Bn. Tai/er 

 Fam. Nat, 403. — Magallana Cav. Icon. t. 344 



(e.xcl. fruct.).— DC. Prodr. i. 684.— Endl. Gen. 

 n. 6064. 



^ Cav. Icon. t. 395. — jAca. Sort. ScJiœnbr. t. 

 98.— R. et Pav. Fl. Per. iii. t. 313, 314.— Peus. 

 JSnchirid. i. 405.— A. S. H. P/. Us. Bras. t. 41, 

 43 ; Fl. Bras. Mer. i. 95. — Pœrr. et Endl. Nov. 

 Gen. et Spec. i. t. 35-38. — Link, Kl. et Ott. Ic. 

 Fl.Itar. t. 17.— Andr. in But. Repos, t. 617, 

 635.— C. Gay, Fl. CInl. i. 407.— Kakst. Fl. 

 CoUimb. i. 145, t. Tl.—Bot. Mag. t. 23, 98, 3169. 

 3190, 3844, 3851, 3985, 4042, 4097, 4245, 4323, 

 4337, 4385.— W alp. Ecp. i. 465; ii. 820; v. 

 381 ; Ann. i. 142 ; ii. 237 ; iv. 397 ; vii 492. 



'' Yellow, red, purple or bluish. 



