50i NATURAL HISTORY OF PLANTS. 



23. Chisocheton Bl.^ — Flower^ hermaphrodite ©r polygamo- 

 dioecious (nearly of Dasycoleum\ oftener 4-merou9 ; calyx small 

 dentate. Petals linear-elongate, coherent in slender sometimes suh- 

 clavate tube, subvalvate or more or less imbricate or contorted a,t 

 apex. Stamens 5-8 ; tube cylindrical elongate, at bas^ oftener 

 adnate to corolla, 5-8-fissus at apex ; lacinise alternate with elongat,e 

 anthers.^ Germen short, 2-4-locular, enclosed in short cylindrical 

 not adnate disk J style slender erect, apex stigmatose capitate ; 

 ovule in cells 1. Capsule coriaceous, loculicidally 2-4-yalvate; 

 valves septiferous; seeds subpeltate, more or less enclosed in aril 

 springing from ventral hilum ; cotyledons of fleshy embryo sub- 

 peltate. — Glabrous or pubescent trees ; leaves abruptly pinnate ; 

 flowers in axillary or supra-alary fall compound very ramose racemes.^ 

 {Southern India, Malaga.*) 



in. SWIETENIE^. 



24. Swietenia L. — Flowers hermaphrodite regular ; calyx 5-fid, 

 imbricate. Petals 5 longer, oftener contorted, patent. Stamens 10 ; 

 filaments connate in urceolate petal oid tube; anthers inserted in 

 hollows of tube, introrse apiculate, 2-rimose. Germen sessile, 

 surrounded by annular disk ; cells 5, oppositipetalous ; style short 

 erect, apex stigmatose, discoid S-radiate ; ovules in cells oo , inserted 

 in 2 series in internal angle, descendent. Fruit capsular, septicidal 

 from base; valves 5, free from 5-gonal axis and 5-alate base, 2- 

 lamellate. Seeds oo descendent, imbricate in 2 series, long and 

 broadly alate above ; chalaza lateral ; hilum impressed at apex of 

 wing traversed by raphe; cotyledons of transverse fleshy embryo 

 more or less conferruminate with each other and with fleshy albumen ; 

 radicle short. — A very tall glabrous tree ; wood coloured odorous ; 

 leaves alternate abruptly pinnate ; leaflets opposite petiolulate oblique 

 at base ; flowers in axillary and terminal compound ramose-cymiferous 

 racemes. {Central continental and insul. America.) See p. 478. 



1 Bijdr. 163. — A. Juss. Mdine. 73.— B. H. other points, very near Basycokwn, differing 

 Gm. 333, u. 10. — Sohizqchiton Spreng. Syst. chiefly in the nature of its disk. 



Cur. Post. 251.— Endl. Qen. n. 6630. " Spec. 6, 7. Mia. Fl. Ind.-Bat. i. p. ii. 537 ; 



2 The masses of pollen often, as in Basw Suppl. i. 196.— TuKoz. Bull. Mosc. (1858), i. 

 eofewOT, catenately superposed distinct. 411. — H. Bn. Admsmia,ia.. 260.— Walp. iS«y. 



'^ A genus, hy the form of its flowers and i. 429 ; Aim. vii. 655. 



