456 BIBLIOGEAPHT. 



characters of the seed and embryo. The Ti-ibes Calophylleae and 

 Quiineae have a small tigellus wdth large, free, or connate coty- 

 ledons. Observations are recorded on the varied structure of the 

 episperm of the Clusieae, the position of the raphe, aestivation of 

 the floral whorls, and symmetry of the flowers. 



Planchon, J. E. et J. Teiana. — La \Taie Nature de la Fleur des Eu- 

 phorbes expliquee par ^xn. nouveau genre d'Euphorbiacees. p. 39. 

 Confirming the view of R. Brown and others as opposed to 

 the Linnean view and recent arguments of Payer and Baillon, 

 fomided on organogenic study, that each stamen is a monandrous 

 male flower, &c. With description of Calycopeplus, gen. nov. : per- 

 haps the undescribed genus alluded to by E. Brown in Remarks 

 on Botany of Flinders' Voyage, as possessing, at the point of 

 articulation of the several male and female flowers, a true calyx. 



— — • — Sur la Pamille des Guttiferes. Conspectus Diagnosticus. 

 Bull. Soc. Bot. 1861. pp. 66, 96. 



The new genera are Oxystemon (New Grenada), Folythecandra 

 (Amazon and Guiana), Balboa (New Grenada), Oeclematopus 

 (Brazil), Pilospervia (New Grenada). 



Memoire sur la Famille des Guttiferes. A. S. Nat. Ser. iv. 



xiii. 306, xiv. 226, xv. 240. 



The first section of this important monograph is devoted to 

 the systematic treatment of the Order — the classification, syno- 

 nymy, and affinities of the genera. The authors attach a primary 

 importance to the characters of the embryo for the distribution of 

 the genera. Three marked types of its structure are recognized : 

 viz. — 1. "With a very large tigellus, and small but distinct cotyle- 

 dons (constant in all Guttiferae with capsular fruit and axile 

 placentation). 2. With a very large, more or less tuberiform 

 tigellus, presenting a pith which has been sometimes taken for the 

 embryo, and sometimes described as the commissure of united 

 cotyledons, or as an internal radicle. The cotyledons are absent, 

 or represented by superficial folds on the seed. And 3. With a 

 very small tigellus and large cotyledons, free or united. Besides 

 reforming the characters of published genera, the following, in 

 addition to those mentioned above, are described as new: — 

 C/usiella, Havetiopsis, Tovomitopsis, and Montrouziera (Pancher). 

 Many new and imperfectly known species are described. 



Ples, M. — Examen d'une matiere blanche inorganique, deposee dans 

 I'interieur du tronc de I'arbre Djati (Tectona grandis), a Java. 

 Jour. Bot. Ned. IS'ol. 135. 



The concretion was formed of phosphate of lime. 



PoKORNY, A. — Untersuchungen liber die Torfmoore Ungarns. Wien. 

 Sitzungsb. xliii. 57. With 1 map. 



PoLONio, A. F. — Osservazioni di botanica diagnostica, tratte dall' 

 erbario Gasparrini esistente nell' orto botanico di Pavia. A. Soc. 

 Ital. Sc. Nat. iii. 344. 



PjiiLLiEUX, El). — Observations sur la Germmation du Miltonia 



