JJSTIVATION AND ITS TEBMINOLOGY. 53 



two at a time, diagonally ; as the first two spores become ripe, two 

 other and younger spores appear on the spicules at right angles with 

 the first, and the two latter push the two former off. Sachs was 

 evidently unacquainted with this fact ; seeing only two spores at a 

 time on the basidia of the Mushroom, he overlooked the fact that two 

 had already been pushed off, or were not yet produced. It is, how- 

 ever, quite common to see all four spores produced at the same time in 

 the Mushroom, so that there is not the slightest foundation for 

 reducing the basidia in Agarims campestris to the production of two 

 spores only. Le Maout and Decaisne in their " Descriptive and 

 Analytical Botany," p. 953, correctly figure the basidia in 4. cam- 

 pestris with four spores ; but, unfortunately, the description of 

 reference to the basidia and the analogous organs (cystidia) is far 

 from correct. — W. G. Siirrn, in "■ Popular Science Review," January, 

 1876. 



Bedfoedsitiee Plants. — Mcdica(jo lappacca. As during the last 

 year or two the Dunstable and Luton bonnet-makers have been using 

 large quantities of plait imported from China, and known as ** Chinese 

 plait," and as one of the habitats of Medicago lappacea is the rice-fields 

 of Hongkong, it seems probable that the seeds of the Medicago have 

 come over from China with the plait. — Orchis incarnata. If 0. latifolia 

 is really distinct as a species from this (and I think not), the latter 

 form certainly grows in Totternhoe Mead, near Dunstable, in company 

 with Pinguicula vulgaris. Abbot gives 0. latifolia as common (though 

 of course he may have had the yav. incarnata in view). — CuscutaEpithg- 

 mum, var. Trifolii, has long been a plague about Dunstable, and Mr. 

 Carruthers has published an account in the "Journal of the Hoyal 

 Agricultural Society," vol. ix., pt. 1, of the occurrenoe of this parasite 

 upon Swedish Turnips at Dunstable ; the parasite preys there not only 

 upon the foliage and stalks, but the turnips themselves. — Linaria 

 repens I have known for the last twelve years on the embankment 

 mentioned, and the locality has been published. — Adoxa moschatellina 

 grows in damp Iplaces on the hills east of Dunstable. — Ilelleborus 

 viridis grows in great abundance in Whipsnade "Wood, near Dun- 

 stable. — Aticmone Pulsatilla, Orchis ustulata, Ophrys muscifera are 

 common at and near Barton-on-the-Clay, not far from Luton. — W. G. 

 Smith. 



€jctract^ anti 3lb^tract^. 



ESTIVATION AND ITS TEEMINOLOGY. 



By Asa Geay. 



The term cestivation, to denote the arrangement of the parts of 

 the calyx, corolla, &c., in the bud, as well as that of vernation for 

 leaves in a leaf-bud, was introduced by Linnasus. He did not 



