BUT ACE AU. 457 



GENERA. 



I. BUTEjE. 



1. Ruta T. — Flowers hermaphrodite regular; receptacle convex. 

 Sepals 4, 5, free or connate at base, imbricated. Petals same in 

 number, alternate, often fornicate, dentate or ciliate, imbricated or 

 contorted. Stamens 8-10, inserted below urceolate thick glan- 

 dular or foveolate disk ; filaments free, dilated at base (the oppositi- 

 petalous rather shorter) ; anthers introrse, 2-rimose. Carpels 4, 5, 

 oppositipetalous ; germens free or adnate at base between them- 

 selves and with the summit of receptacle, 1-locular; styles same in 

 number, free at base, shortly coalescing in column capitellate stigma- 

 tiferous at apex ; ovules in each germen 2- oo, 2-seriate descending 

 or subtransverse anatropous. Fruit carpels 4, 5, nearly free or 

 more or less connate at base, dry capsular, or inwardly dehiscing at 

 apex, more rarely higher connate, subfleshy, with difficulty or not at 

 all dehiscing at apex (Buteria). Seeds angular ; testa dusky largely 

 punctuate ; albumen fleshy ; embryo rather thick more or less curved ; 

 cotyledons sometimes 2-partite ; radicle conical. — Herbs perennial at 

 base, or undershrubs glandular-punctuate graveolens ; leaves alternate 

 simple or 3-sect {Haplophyllum), usually 3-foliolate, pinnatisect or 

 decompound ; flowers in terminal or axillary cymiferous racemes 

 foliaceous-bracteate ; terminal ones usually 5-merous, lateral usually 

 4-merous (Med. regions, Western and Central Asia). See p. 380. 



2. Bcenninghausenia Reichb. 1 — Flowers nearly of Ruta, 4- 

 merous ; sepals connate at base. Stamens 8 or more rarely 6, 7, of 

 which 4 are alternipetalous longer. Disk within stamens cupuliform, 

 crenate at margin. Gynseceum long stipitate ; carpels 4, oppositi- 

 petalous free ; styles 4, coalescing in column stigmatiferous at apex; 

 ovules in each germen 4-8, 2-seriate. Fruit 4-coccous stipitate, fur- 

 nished with persistent base of calyx and disk; cocci free patent 



1 Consp., 197 (nee Speeng.). — Endl., Gen., staurus Jungh., in Nat. et Gen. Arch., ii. 45 

 n. 6026.— B. H., Gen., 287, n. 11.— ? Podo- (ex Endl., Gen., Suppl., iv. 101). 



