504 NATURAL HISTORV OF PLANTS. 



23. Chisocheton Bl.' — Flowers hermaphrodite or polygamo- 

 diœcious (nearly of Das^>/ cole urn), oftener 4-merous ; calyx small 

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

 clavate tube, subvalvate or more or less imbricate or contorted at 

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

 adnate to corolla, 5-8-fissus at apex ; lacinioe alternate with elongate 

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

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

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

 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 full compound very ramose racemes.^ 

 {Southern India, 3Iulaga.*) 



in. SWIETENIEJ]:. 



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 Sradiate ; ovules in cells co , 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 oj^posite petiolulate oblique 

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

 racemes. {Central continentul and insid. America.) See p. 478. 



' Bijdr. 163.— A. Juss. Mcliirc. 73.~B. H. other points, very near Dasi/colaim, differing 



Gen. 333, n. 10. — ScMsochiton Spreng. Syst. chiefly in the nature of its disk. 



Cur. Pout. 251.— Endl. Oeii. n. 5530. •• Spec. 6, 7. Mm. Fl. Iiid.-Sat. i. p. ii. 537 ; 



- The masses of pollen often, as in Dasij- Siippl. i. 19G. — Tuitcz. Bull. Moxc. (1858), i. 



cr/fc«»i, catenatuly superposed distinct. 4M. — U. Us. Ail(/iisoiiia,xi. 200. Walp. AV». 



■■ A genus, Ijy the form of its flowers and i. 129 ; Ann. vii. 555. 



