22 



RHAMNE^E. 



fruit, especially in several species of Rhamnus, in which they 

 botli are purgative and emetic, and in some degree astringent. 

 Many species of Zizyphus, however, bear wholesome and agree- 

 able fruit. The berries of the greater number yield yellow and 

 green dyes, under the hands of the chemist, of much importance 

 to manufacture. The bark of Ceanothus casruleus is esteemed 

 febrifugal in Mexico. 



Synopsis of the Genera. 



1 PALIU'RUS. Calyx spreading, 5-cleft (f. 4. A. a.). Petals 

 obovate, convolute (f. 4. A. &.). Stamens exserted (f. 4. A. c.). 

 Anthers 2-celled (f. 4. A. c.). Disk flat (f. 4. A. rf.) pentagonal. 

 Styles 3. Fruit dry, indehiscent (f. 4. A. g.), containing a 3- 

 celled nut (f. 4. A. /.), winged in the circumference (f. 4. A./.). 



2 ZI'ZYI-HUS. Calyx spreading (f. 4. B. a.), 5-cleft. Petals 

 obovate, unguiculate (f. 4. B. b.), convolute. Stamens exserted 

 (f. 4. B. c.). Anthers 2-celled (f. 4. B. c.). Disk flat (f. 4. 

 B./.), pentagonal. Styles 2-3 (f. 4. E.g.). Fruit fleshy, con- 

 taining a 1-2-celled nut (f. 4. B. /<.). 



3 SPH/EROCA'RYA. Calyx 5-parted. Petals minute, ovate, 

 obtuse. Stamens short. Disk none. Style 1. Drupe fleshy, 

 containing a 1 -celled, 1 -seeded nut. 



4 CONDA^LIA. Calyx spreading, 5-cleft (f. 4. C. a.). Petals 

 wanting. Anthers 2-celled (f. 4. C. e.). Disk flat, pentagonal 

 (f. 4. C.c.). Style 1. Fruit drupaceous, containing a 1 -celled nut 

 (f. 4. C. rf.). 



5 BERCHE'MIA. Calyx tubular, 5-cleft (f. 4. E. a.). Petals 

 convolute (f. 4. E. c.). . Stamens inclosed (f. 4. E. d.). Anthers 

 2-celled (f. 4. E. c.). Disk annular (f. 4, E./.), nearly flat. 

 Style simple. Fruit dry, 2-celled (f. 4. E. g.~). 



C VENTILA'GO. Calyx spreading, 5-cleft (f. 4. D. c.). Petals 

 obovate, convolute (f. 4. D. a.). Stamens exserted (f. 4. D. b.). 

 Anthers 2-celled (f. 4. D. 6.). Disk fleshy, flat. Style com- 

 pressed, bidentate (f. 4. D. j.). Fruit indehiscent (f. 4. D. //.), 

 woody, 1-celled, 1-seeded, winged at the apex (f. 4. D. /c.). 



7 SAGERE V TIA. Calyx urceolate, 5-cleft (f. 4. F. a.). Petals 

 convolute or cucullate (f. 4. F. e. b.). Anthers 2-celled (f. 4. 

 F./.). Disk thick, cup-shaped. Ovary 3-celled (f. 4. F. d.). 

 Style short, thick (f. 4. F. g.~). 



8 RHA'MNUS. Calyx urceolate (f. 5. A. b. C. b.), 4-5-cleft 

 (f. 5. A. a. C. a.). Petals emarginate (f. 5. C. c.), or wanting. 

 Anthers 2-celled (f. 5. A. d.). Disk thin (f. 5. C. e.). Styles 

 3-4, connected (f. 5. A. g.), or free. Fruit baccate, containing 

 3-4, rarely 2, little nuts (f. 5. A.j. B. /.). 



9 SCUTIA. Calyx urceolate, 5-cleft (f. 6. A. g.). Petals 

 flattish, emarginate (f. 6. A. c./.). Anthers 2-celled (f. 6. A. b.). 

 Disk fleshy (f. 6. A. e.). Style short (f. 6. A. &.). Fruit con- 

 taining 3 nuts (f. 6. A. /.). 



10 RETANILLA. Calyx urceolate, 5-cleft (f. 5. E. 6. e.). Petals 

 cucullate (f. 5. E. c. d.), sessile. Stamens inclosed (f. 5. E. c.). 

 Anthers kidney-shaped, 1-celled. Disk covering the bottom of 

 the calyx (f. 5. E. g.) Style simple (f. 5. E. /.). Fruit con- 

 taining a 3-celled nut (f. 5. E. '.). 



11 COLLEGIA. Calyx campanulate (f. 5. F. y.). coloured. 

 Petals wanting. Anthers 1-2-celled, kidney-shaped (f. 5. F. i.) 



or ovate. Disk cup-shaped (f. 5. F. g.~). Style simple, elon- 

 gated. Fruit dehiscent, containing 3 nuts (f. 5. F. h. fc.). 



12 TREVOA. Calyx turbinate, 5-cleft. Petals cucullate. 

 Stamens inclosed. Anthers 1-celled, kidney-shaped. Disk 

 almost wanting. Style long, hairy. Capsule membranous, 2- 

 valved, 1-seeded. 



13 DISCA V RIA. Calyx campanulate, 4-5-cleft, coloured. Pe- 

 tals 4-5. Stamens inclosed. Anthers 2-celled. Disk cup- 

 shaped, fleshy. Style crowned by a 3-lobed stigma. 



14 HOVE'NIA. Calyx rather spreading (f. 6. B. a.), 5-cleft. 

 Petals obovate, unguiculate (f. 6. B. e.), convolute. Stamens 

 inclosed (f. C. B. e.). Anthers 2-celled. Disk fleshy (f. 6. B. 



/.), flat. Style trifid. Fruit of 3 free berries (f. 6. B. /.) 



15 COLUBRINA. Calyx spreading, 5-cleft (f. 6. D. a.). Petals 

 obovate, convolute (f. 6. D. 6.). Stamens exserted (f. 6. D. c.). 

 Anthers 2-celled. Disk fleshy, flattish, pentagonal (f. 6. D. g.). 

 Style trifid. Fruit dehiscent, containing 3 seeds (f. 6. D. f.). 



16 CEANOTHUS. Calyx a hemispherical tube, with a 5-cleft 

 limb (f. 6. C. d.). Petals unguiculate, cucullate (f. 6. C. c.). 

 Anthers 2-celled (f. 6. C. fc.). Disk spongy, annular (f. 6. C.e.). 

 Styles 3. Fruit containing 3-seeds (f. C. D./.). 



17 WILLEME'TIA. Calyx urceolate, 5-cleft (f. 6. F. d.). Pe- 

 tals cucullate, sessile (f. 6. F. 6.). Stamens inclosed. Anthers 

 2-celled. Disk very thin(f. 6.F.e.). Ovary 3-celled. Style simple. 



18 POMADE'RRIS. Calyx rather spreading (f. 6. E. a.), 5- 

 cleft. Petals flat, unguiculate, subcordate or wanting. Stamens 

 exserted (f. 6. E. b.). Anthers 2-celled (f. 6. E. c. e.). Disk 

 wanting. Style trifid (f. 0. E. c. d.). Fruit containing 3 seeds 

 (f. 6. E./.). 



19 CRYPTA'NDRA. Calyx coloured, campanulate 5-cleft (f. 5. 

 D. c. b. a.). Petals small, cucullate, sessile (f. 5. D. e.). 

 Stamens inclosed (f. 5. D. e.). Anthers 2-celled. Disk wanting. 

 Style simple. Capsule containing 3 seeds. 



20 BARTLI'NGIA. Calyx bibracteate, tubular, 5-cleft. Petals 

 scale-formed. Stamens 10. Anthers 2-celled, opening laterally. 

 Disk wanting. Style simple. Ovary compressed, 1-celled, 1-2- 

 seeded. 



21 SOLENA'NTHA. Calyx 5-cleft. Petals 5, conniving into a 

 tube. Anthers 2-celled, each inserted under a scale. Ovary 

 2-lobed. 



22 TETRAPA'SMA. Calyx 4-cleft. Petals 4, cucullate. Sta- 

 mens 4, inclosed. Stigma 3-lobed. Ovary 3-celled. 



23 TRICHOCE'PII ALUS. Calyx with a short tube and long seta- 

 ceous segments (f. 7. C. b.). Petals wanting or setaceous. 

 Anthers kidney-shaped, 1 -celled (f. 7. C. e.). Disk hardly any. 

 Style simple, short. Fruct containing 3 seeds (f. 7. C. c.). 



24 PHY'LICA. Calyx with a cylindrical tube and a 5-cleft 

 limb (f. 7. B. &.) Petals cucullate (f. 7. B. d. c.). Stamens in- 

 closed (f. 7. B. c.). Anthers 1-2-celled. Disk hardly evident, 

 (f. 7. B./.). Style trifid (f. 7. B. .). Fruct 3-seeded (f. 7. B. h. k.). 



25 SOULA'NGIA. Calyx with an obconical tube and a cleft 

 limb (f. 7. D. d.). Stamens inclosed (f. 7. D. c.). Anthers 

 kidney-shaped, 1-celled (f. 7. D. c.). Disk epigynous(f. 7. D. A.), 

 pentagonal, fleshy. Style simple. Fruit 3-seeded (f. 7. D. k. i.j.}. 



26 GOUA'NIA. Calyx with a rather spreading, 5-cleft limb 



