458 NATURAL HISTORY OF PLANTS. 



membranous, dehiscing by ventral sutures. Scanty seeds and other 

 characters of Uuta. — Perennial glandular-punctuate fragrant herbs ; 

 stems and branches slender terete ; leaves alternate, 2-pinnate ; 

 folioles entire ; flowers 1 in terminal compound-cymiferous racemes ; 

 cymes more or less regular, sometimes 1-parous at apex; bracts 

 small foliaceous entire 2 {Northern India, Japan 71 ). 



3. Thamnosma Torr. & Frem. 4 — Flowers 4-merous ; sepals 

 short. Petals sessile entire, in false campanulate or tubular corolla, 

 connivent free, imbricated. Disk thin, annular or cupuliform, cre- 

 nate or lobed. Stamens 8, 2-seriate, inserted at base of disk ; fila- 

 ments filiform ; anthers short apiculate, introrsely 2-rimose. Germen 

 long or shortly (Rufosma 5 ) stipitate, 2-dymous, 2-locular (carpels 

 ventrally long connate) ; style slender erect, stigmatiferous capitellate 

 at apex; ovules in each cell 4-8, 2-seriate. Capsule coriaceous 

 punctuate, 2-dymous ; cells 2, inwardly dehiscing. Seeds few, sub- 

 reniform, smooth or muricate (Rutosma) ; testa crustaceous ; albumen 

 fleshy; embryo curved. — Shrubs or herbs frutescent at base glan- 

 dular-punctuate graveolens ; leaves alternate entire simple, some- 

 times very scanty or almost wanting ; flowers 6 ramified racemose at 

 apex of branchlets (California, Texas 7 ). 



4. Tetradriclis Stev. 8 — Flowers 4-merous ; receptacle depressed 

 convex. Sepals small and petals longer, very shortly unguiculate 

 persistent. Stamens 4, inserted with perianth ; filaments thin sub- 

 ulate ; anthers subglobose, 2-rimose. Carpels 4; germen l-locular; 

 style central gynobasic erect inserted between germens ; apex 4- 

 agonal angular stigmatiferous ; ovules in each germen 2-6, obliquely 

 inserted at interval angle. Capsule depressed-4-gonal ; cells 2- 

 spermous, loculicidal at angles ; exocarp membranous separating from 

 crustaceous endocarp. Seeds oblong ; testa thin smooth ; embryo 

 rather short curved. — Fleshy glabrous many-stemmed herbs ; leaves 



1 Small, white. 5 A. Geat, Gen. III., 143, t. 155. 



2 A genus much hetter made a section of 6 Small or large, yellow, the same by some 

 Ruta. referred to Haplophyllum. 



3 Spec. 1. R. albijlora Reichb., loc. cit. — 7 Spec. 2. Walp., Ann., vii. 510. 



Walp., Rep., i. 517. — Ruta albijlora Hook., 8 In Bleb. Fl. Taur.-Cmicas., iii. 277, 648.— 



Fxot. Fl., t. 89. C. A. Met., Vers. Cauc.-Casp. Pfl., 226.— 



In Frem. Sec. Rep., 313 ; in Whippl. Rep., Endl., Gen., n. 6029.— B. H., Gen., 288, 



17, t. 3. — B. H., Gen., 288, n. 15. n. 14. — Anatropa Eheenb., iu Linncea, iv. 402. 



