294 



HENDERSON'S HANDBOOK OF PLANTS. 



BIS 



e. Doubly furrowed. 

 Biternate. Divided into three twice over, as 

 when the principal divisions of a leaf are 

 three, each of which bears three leaflets. 



Bi-tri-crenate. Crenate twice or thrice. 



Bi-tri-pinnatifid. Pinnatifid twice or thrice 

 over. 



Bi-fri-hrnate. Growing in threes twice or 

 thrice over. 



Bitten. Terminated irregularly and ab- 

 ruptly; applied to leaves and roots. 



Bivaginate. Having double sheaths or cov- 

 ers. 



Bimlved. Two-valved. 



Bwittate. Having two vittse. See Vitke. 



Bixacece, Bixinece. A name sometimes 

 given to the order of Bixads, more gen- 

 erally called Flacourtiacerp, -vrhich see. 



Black RusL See Rust. 



Blade. The lamina or expanded part of a 

 leaf; the limb of a leaf. 



Blanching. A whitening of the usually 

 green parts of plants, to which the term 

 Albefactio is applied. See Albefactio. 

 Earthing up Celery is a familiar example j 

 of blanching. 



Bland. Fair, beautiful, as Mesembrt/anlhe- 

 mum blandum. 



Blastema. The axis of an embryo, compre- 

 hending the radicle and plumule, with 

 the intervening portion; also the thallus 

 of a Lichen. See Thallu*. 



Blastidia.The secondary cells generat- 

 ed in the interior of another cell. 



Blantus. The plumule. 



Blepharce.The teeth or fringes belonging 

 to the peristome (which see) of an Urn I 

 Moss. 



Blotting. That kind of change in tissue \ 

 which results in the formation of a brown 

 color without putrefaction, as in the fruit 

 of the Medlar. The term Hyposathria \ 

 (which see) is applied to this change. 



BLU 



Blight. As used by cultivators this term is 

 of vague significance. It is applied to those 

 diseases of grain, etc., which usually de- 

 pend upon the presence of parasitic Fun- 

 gi. The Pear Blight, so destructive to 

 Pear Trees for many years past, is now 

 generally believed to be owing to the 

 presence of a Fungus, though not a few 

 still believe that it is to be attributed 

 to a diseased condition of the sap. There 

 have been several theories put forth to 

 account for this destructive disease, and 

 the subject still remains more or less of 

 a mystery. Insects have also been 

 charged with producing the disease; 

 but whatever the cause, all know the 

 results to be only too fatal, and, thus 

 far, without remedy. Blight is not 

 confined to the field and the orchard, but 

 also finds its way to plants in the garden. 

 If Fungi are not the cause of the disease, 

 they may be said to be always present as 

 a result. 



Blind Shoot. This is the term used for a 

 young shoot which terminates without a 

 flower bud, as in some shoots of Roses, 

 Camellias, etc. 



Blistered. Having the surface raised as the 

 skin is when blistered. 



Blood and Bone Fertilizer. See Fertilizers. 



Blood Fertilizer. See Fertilizers. 



Bloodroots.A. name applied by Lindley to 

 the order Hcemadoracece. 



Blotched. Where color is irregularly dis- 

 posed in broad patches. 



Blue Mould. This name is commonly ap- 

 plied to Aspergillus glaucus, when grow- 

 ing upon cheese. There are people who 

 think it so necessary to a good cheese, 

 that they will set even a poor one aside 

 till it becomes mouldy, assuming that it 

 thereby becomes better, and some 

 even inoculate the cheese with Blue 



