220 



NATURAL HISTORY OF PLANTS. 



corollas are in fact similar to those of several American Anonas in 

 the breadth of the petals and the thickness of their ed<j^es ; while 

 their ripe carpels are, as we have seen, as thick as in several species 

 of Unona ; their number is considerable in the flower, and much 

 reduced in the fruit. 



Thus constituted, the genus X^Iopia contains about thirty species 

 from the warm regions of Africa,' Asia,- and Oceania,^ while about 

 fifteen come from tropical America/ 'fhey are trees or shrubs, with 

 flowers solitary or C3'mose, axillary or lateral, rarely terminal. 



The genus Anona (figs. 267-2 74)\ which has given its name to 

 the whole order, and to which nearly all its species were at first 



-' — ■<'iy^ 



' Ps 



Anona squamosa. 



Fig. 267. 



Fruit ii). 



Fig. 208. 

 Transverse seetiou of fruit. 



referred, may be defined in few words, now that we know the pre- 

 ceding genus : Anona is Xylopia with a convex receptacle whose pauci- 

 ovulate ovaries become a fleshy multiple fruit with connate carpels 

 (figs. 207, 2GS, 271) ; or, again, Anona is to Xylopia what Buguetia 

 is, on the whole, to Uvaria. The calyx consists of three sepals, 



shiipod, concave witliin and bowed at the apex, 

 and wliere they only touch by a rather thin cd<re, 

 not by a very broad surface. In fact, as in X. 

 J'iril/ardi, they arc nearly the petals of Unona. 

 ' Hook., Niger, 204 — Benth., Linn. Trans., 

 xxiii. '178.— A. DC, Mem., 31-34. — Rich., 

 CiiiLL., I'KKU., Tent. Fl. Seneg., i. 9.— H. Bx., 

 Adansonia, iv. 140; v. 362. 



2 Hook. & TiioMS., Fl. Lid., i. 123.— Tnw., 

 £num. PI. Zeyl., 9. 



3 ZOLI,., Liiinaa, xxix. 318. — MlQ., Fl. Ind.. 

 Bat., i. p. ii. 37 ; Ann. Mi'-s, Lu(jd. Bat., ii. 43. 



' A. S. H., Fl. Bras. Mer., i. 39, t. 8.— A. 

 IluH., Fl. Cnh., 15, t. vi. vii. — Makt., Fl. Bras., 

 Anonac, 41, 1. 13.— Okisi;b., Fl. Brit. W. Ind., 



6. — ScHLTL., Linnrea, ix. 326. — Pl. & Teiana, 

 Ann. Sc. Nat., ser. 4, xvii. 37. Also, for the 

 species of ditl'ereut countries, Walp., Rep., i. 75 ; 

 Ann., iv. 61 ; vii. 59. 



* Anona L., Gen., n. 693 [Amwna). — Juss., 

 Ge7i., 2S3. — G.^^ETXEK, Friicf., ii. 193, t. 138. — 

 Dm., Mon., 28, 58, t. 2-7.— DC, S^st., i. 466 ; 

 I'rodr., i. 83 ; ap. Deless., Icon. Sel., i. t. 86. — 

 Si'ACH, Suit, a Bvffon, vii. 497. — Endl., Gen., 

 n. 4723.— Walp., Rep., i. 86; ii. 748 ; v. 15; 

 Ann., ii. 20; iv. 56 ; vii 58.— Boi. Reg., t. 1328. 

 —Bot. Mag., t. 2011, 2911, 2912, 3095, 4226.— 

 B. H., Gen., 27, 958. n. 30.— H. Bn., Adan- 

 sonia, viii. 265, 296, 310, 389. — Guanabanus 

 PiXM., Nov. Gen. Amer., 43. 



