370 NATURAL HISTORY OF PLANTS. 



variably imbricated ; highest usually outside, often a little broader 

 than rest. Stamens 10, very perigynous ; filaments free; anthers 

 uniform linear-acuminate versatile 2-rimose. Germen central stipi- 

 tate ; ovules co 3 more frequently few ; style short subulate incurved ; 

 apex minute stigmatiferous. Legume subdrupaceous thick, 1 -seeded. 

 — Lofty unarmed trees ; leaves imparipinnate or 1-foliolate ; stipules 

 minute or ; flowers 1 in simple axillary or terminal branching 

 racemes ; bracts small caducous (Bast of Tropical America'). 



291. Zollernia Mart. 3 — Flowers subregular ; receptacle minute 

 convex. Calyx gamosepalous, entire acuminate in bud, valvate, by 

 anthesis sometimes unequally cleft, finally reflexed or deciduous. 

 Petals 5, hypogynous imbricate ; vexillary a little broader external. 

 Stamens 10 (or 9-15); filaments hypogynous free short; anthers 

 uniform linear-acuminate, subbasifixed ; cells introrse 2-rimose. 

 Germen shortly stipitate ; ovules oo ; style short subulate ; apex 

 minutely and subobliquely stigmatiferous. Legume very shortly 

 stipitate, ovoid or subglobose, apiculate rather thick, 2-valved. 

 Seeds 1 or few, orbicular subulate or ovate ; embryo exalbuminous ; 

 cotyledons broad compressed ; radicle short inflexed. — Unarmed 

 trees or shrubs ; leaves simple shortly petiolate ; stipules rigid ; 

 flowers 4 in terminal simple or more frequently branched racemes ; 

 bracts small caducous ; bractlets minute inserted on pedicel 

 (Brazil 5 ). 



292? Exostylis Schott. 6 — Flowers regular hermaphrodite or 

 polygamous ; receptacle elongated obconical turbinate, disciferous 

 within. Calyx perigynous gamosepalous, before anthesis subentirc 

 at apex minutely 5-dentate valvate, by anthesis valvate 3-5-partite 

 and finally reflexed. Petals 5, perigynous subequal free ; aestivation 

 variable, sometimes contorted, sometimes variably imbricated ; 

 highest often inside. Stamens 10; free subequal, inserted within 

 petals, to which 5 are opposite, the rest alternate ; filaments subu- 

 late ; anthers introrse affixed a little above base, apiculate 2-celled 



1 Handsome, white. 4 « Yellow." 



2 Species 4. Walp., Rep., v. 565. * Species 4. Tul., in Arch. Mus., iv. 190.— 



3 In Nov. Acta Nat. Cur., xiii. p. 13, t. C, Walp., Sep., i. 841 ; v. 562. 



D.— Endl., Gen., n. 6813.— B. H., Gen., 560, « In Sprang. Syst., Cur. Post., 406.— B. H., 



n. 291.— Acidandra Maet., mss. (ex Enixl.).— Gen., 560, n. 292.— Exostyles Ekdl., Atakt., 



Coquebertia At>. Be., in Ann. Sc. Nat., ser. 1, 26, t. 25; Gen., n. 6758. 

 xxx. 180 ; in Duperr. Voy., Sot., t. 75. 



