PHANEKOGAMIA. 4iG5 



genera of UmhelUferae (^JPleurosperrmim, JEcliinopliora, Bowlesia 

 lohata). (2.) The abortion or imperfect development of one 

 of tlie carpels of the fruit in various genera. Unequal wings or 

 ribs. (3.) Critical notes on the genus i?eM^era. (4:.) AtJiamanta 

 verticillata, Sm. (5.) Fruit of Thapsia scahra, Trev. {Meliocarpus, 

 Boiss.). (6.) Conioselinum. (7.) Callisace. (8.) Dorema and Di- 

 serneston, Jaub. and Sp. (9.) Arcliangelica G-melini, DC. {Goelo- 

 pleuruvi, Led.) identical with Ligusticum scoticum, L. (10.) 

 Gachrys eriantha, DC. and C. involucrata, Pall. (11.) Exoacantha, 

 Lab. (12.) Grammosciadiwn. 



TuEViEAJfUS, L. C. — Lychnis praecox. Bonpl. 1861. p. 205. 



A new species, of doubtful origin, cultivated by the author, 

 in habit resembling L. diurna, in characters L. declinis, Lag. 

 Observations are added on Lychnis Viscaria and L. alpina, and 

 the weakness of the characters depended upon for their discrimi- 

 nation. 



TuLASNE, L. E,. — Flora Brasilieusis. Antidesmeae, p. 330. With 

 4 plates. 



Hieronymia of F. Allemao supersedes Stilaginella of Tulasne. 

 It is the only Brazilian genus of the group. But three species 

 are described. 



IJjs^aEE, F. — Beitriige zur Anatomie und Physiologic der Pflanzen. 

 Wien. Sitzungsb. xliv, 181, 327. 



Eecent investigations on the Transpiration of plants. The 

 author's chief results are: — 1. Transpiration is a purely physical 

 process modified by the condition of the plant and dependent on 

 the temperature, humidity and motion of the aii', the character of 

 the soil, and the surface adapted for exhalation. 2. Transpiration 

 undergoes a periodical alternation, the maximum and minimum 

 depending upon the daily temperature. 3. The two leaf-surfacea 

 bear different relations to Transpiration : generally, the under- 

 side exhales more than the upper. 4. Although the Stomata may 

 be regarded as the organs best suited for Transpiration, yet the 

 Epiderm also permits it. 5. During Transpiration the crescentic 

 cells of the Stomata are turgescent and tense according to the 

 extent to which they are open. 6. As the amount of evaporation 

 is in proportion to the evaporating surface, so the amount of 

 water evaporated from a surface covered with vegetation is much 

 greater than, imder like conditions, from a surface of water of 

 equal area : the influence of Transpiration on the condition of 

 the atmosphere is consequently not unimportant in countries 

 covered with meadows, grass, and woods. 7. In Water-plants, 

 an elimination of water takes place corresponding to tran- 

 spiration. 8. The absorption of water by the root under normal 

 conditions exceeds the loss by exhalation but very little. 



Veblot, B.— Sur quelques Arbres remarquables plantes daus le De- 



- partement du Loiret. Bull. Soc. Bot. viii. 354. 



