116 Bibliographical Notices, 



nor in the African deserts, the shores of Venezuela, and scarcely in 

 the mountains of the South of Europe. Two hundred and ten spe- 

 cies are found in the tropics; 133 are extra-tropical, of which 45 in- 

 habit the southern hemisphere. The New World affords 180 species, 

 the old 175 : but 12 are common to both. The higher mountains 

 of the Andes yield the greater proportion of species (51), then fol- 

 lows tropical Brazil (46), the Himalaya Mountains (41), the United 

 States (33), the Alpine Flora of Europe and Siberia (32), Hindostan 

 (30), the Cape of Good Hope (25). One hundred and thirty-five 

 species flourish at an elevation exceeding 5000 feet above the level 

 of the sea, 230 below that elevation. The maximum of the family 

 may be considered alpine ; nevertheless the species are rare or al- 

 together wanting in the Alps of Mexico, Java, on the Peak of Tene- 

 riflfe, and of Sicily. 



The following is Dr. Grisebach's Conspectus Gentianearum ex 

 methodo analytico dispositus. 



A. ^stivatio corollae dextrorsum contorta. 



a. Stylus distinctus, deciduus. 



a. a. Antherarumloculi absque connective oppositi! Corolla rotata, circa 



capsulam marcescens. Trib. 1. Chiron ie^. 



b. h. Antlierae connectivo instructse. 



a. a. Semina placentae immersa. Infiorescentia centrifuga, dichotoma. 

 «6. Corolla spectabilis, ssepius rotata, denium circa capsulam marce- 

 scens. Trib. II. Chlore^e. 

 /3. Corolla parvula, infundibuliformis, demum aut supra capsulam 

 torta aut decidua. Trib. IV. Erythr^ace.e. 

 h.h. Semina funiculis imposita ! Infiorescentia centripeta. Trib. III. 

 Hippies. 



b. '^tigma ovario stylo persistenti irapositum. 



a. a. Infiorescentia dichotoma. Sepala connexa. Stylus distinctus. 



Trib. V. LisYANTHE^. 

 h. b. Infiorescentia racemiformis. Sepala sublibera 1. membrana intra- 

 calycina juncta. Stylus ssepius 0. Trib. VI. SwERxiEiE. 



B. iEstivatio coroll?e induplicativa. Trib. VII. MENVANXHiDEiE. 



I. ClIIRONIEiE. 



A. Stigma indivisum. Antherarum rima contigua. 



a. Placentae valvares. Antherarum rima elongata ... 1. Chironia, L. 

 h. Placentae demum centrales liberae. Antherarum 



rima poviformis 2. Exacum, L. 



B. Stigma bicrure. Antherarum loculi distincti. 



a. Antherse strictas rimse poriformes. Stigma immu- 



tatum 3. Dejamra,C\\si.m. 



b. Antherae spirales rima elongata. Stigma spirale. Sabbatice Sect. 



Pseudochironia. 



