234 THE JOURNAL OF BOTANY 



anatomy of many species of Salicornia is tlie occurrence of spiral 

 or spicular cells, or of both. An account of the structure and 

 distribution of these elements was given, and the presence of 

 transitional forms between the two kinds of cells in S. lignosa and 

 S. perennis was described. The conclusion was arrived at that 

 the spiral and spicular cells are homologous structures, the latter 

 serving for mechanical support, while the former function as 

 water-storing elements. Many species of Salicornia have a well- 

 marked aerating cortex, developed from the outer side of the 

 secondary cambium which produces from its inner margin the 

 analogous zone of secondary thickening. This aerating tissue is 

 found at the base of the main stem in S. fricticosa, S. imsilla, 

 S. Smithiana, and S. gracillima, and at the base of the aerial 

 shoots or on the rhizome in S. i)erennis, S. lignosa, and S. Oliveri. 

 A further development of this aerating cortex results in the 

 formation of " ribs " of aerenchyma which are found at the base 

 of the main stem in S. ramosissima, while a soft, spongy coating 

 of this tissue occurs in a similar position on the stem and also on 

 the root in S. europaa. 



Saxipraga Hirculus at Knutsford. — The following incident 

 connected with this plant, recorded in the Eev. Henry Green's 

 History of Knutsford, may be worth extracting : " There was on 

 the moor a very rare plant, to be found only in three or four 

 places in the whole kingdom ; it is the Marsh Saxifrage, and it 

 grew on a very swampy part of the moor, on a plot of ground 

 which did not exceed fifty square yards. The Count D'Artois 

 (afterwards Charles X. of France) had a rage for rare plants, and 

 his floral passion was known to a French dancing-master then 

 resident in Knutsford — Eogier was his name. The Professor 

 waited on the Count, and together they set out exploring— ditch 

 after ditch they successfully crossed— when lo ! one wide and 

 deep, with the peculiarly unctuous mire of the locality, arrested 

 their eager progress ; Eogier, being light and a danxiing-master, 

 skilfully pirouetted across the abyss ; but the Count, being heavy 

 and not a dancing-master, floundered in, and, like a second 

 Falstaff, having an alacrity at sinking, experienced no little trouble 

 to get again on firm ground." 



LiMONiuM bellidifolium: a Correction. — In my paper on 

 the Denbighshire Flora (Supp. p. 33) I have recorded Limonium 

 bellidifolium for that county. This is an error due to confusion 

 of synonymy. All these records must be read as referring to 

 L. vulgare. This error is due to some old records of " Statice 

 reticulata " which should be referred to L. vulgare and not to 

 L. bellidifolium, although according to Hooker (Student's Flora) 

 S. reticulata L. is given with some doubt as a synonym of 

 S. bellidifolia. — A. A. Dallman. 



ViciA sylvatica L. var. condensata. — This variety, which I 

 originally described {Naturalist, 85, 1884) from plants gathered on 

 the shingle near Port William in Wigton, I found in 1909 in large 

 quantity near Drummore, Mull of Galloway, and distributed it 



