PHANEROGAMIA. 459 



Plautes du Groupe des Cjcloapermees. Anu. S. N. Ser. iv. xiv. 

 p. 73. Witli G plates. 



Preceded by a brief general review, in respect of anatomical 

 structure, of various Xatural Orders investigated by previous 

 observers. M. Eegnault includes under Cyclospermeae the 

 following Orders: Crassulaceae, Mesembryaceae, Tetragonieae, 

 Portulaceae, Paronycbeae, Caryophylleae, Amarantaceae, Cheno- 

 podiaceae, Phytolaccaceae, and Xyctagiueae, — a more or less 

 extended account being given of the stem-structure in each. Two 

 conspicuous characters prevail throughout these Orders, distm- 

 guishiug them from the majority of Dicotyledons, viz. — The pre- 

 sence in the wood of a generating tissue, and the absence of 

 concentric annual zones. The thin-walled cells of this generative 

 tissue are variously disposed through the ligneous mass, — some- 

 times as isolated cords iu the midst of compact wood, sometimes 

 forming complete or partial zones separating corresponding 

 ligneous zones concentrically. Attention is drawn to the relation 

 subsisting between tliis intraligneous generative tissue and the 

 vessels of the stem as a point upon which further research is re- 

 quired. Minor characteristics of the anatomy of Cyclospermeae 

 consist iu (1) the frequency with which vascular bundles con- 

 taining vspu"al vessels are foimd isolated in the pith ; (2) the 

 absence of medullary rays ; (3) the absence in several Orders of 

 liber, its partial or abnormal character in others ; and (4) the 

 abundance of crystalline concretions in the parenchyma of the 

 stem. Viewed in a classificatory point of view, the author con- 

 eludes — (1) that in each Family of the Cyclospermeae the stem 

 presents special characters, which establish a type around which 

 the various genera may be arranged with but secondary variations. 

 Campliorosma is the sole exception knoAvn to this rule. (2) The 

 entire group oflers, at least when fully developed plants are 

 examined, certain general structural characters, which impress on 

 its members the stamp of affinity. 



Heichaedt, H. — Einige Nachtriige zu Garcke's Flora von Halle. 

 Verb. Bot. Yer. Brandenb. Hft. ii. p. IIG. 



Eeichaedt, H. W. — Ueber eine Monstrositat der Carex praecox. 

 Wieu Yerhandl. xi. 237. 



Affording evidence in fivoiu' of Kunth's view of the structure 

 of the female flower in Carex. Forms occui'red intermediate 

 between the normal flower of Carex and others apparently quite 

 analogous to those of Schoenoxiphium. 



• Beitrag zur Kenntniss der Cirsien Steiermarks. Wieu 



Verhandl. xi. 379. — Verhascum pseudo-phoeniceum (Y. Blattai'ia- 

 pJweniceum) ein ueuer Blendling. 403. 



Beitrag zur Flora von Niederosterreich. Wieu Yerhandl. xi. 



337 and 371. — Verhascum Neilreickii (Y. spccioso-phlumoiJes), 



ein neuer Blendling. 3G7. 



N. H. R.— 1SG2. 2 1 



