Thyrse 



tomentous 



Thyrse, Thyr'sus (Lat., the Bacchic 

 staff), a mixed inflorescence, a 

 contracted or ovate panicle, the 

 main axis indeterminate, but the 

 secondary and ultimate axes cy- 

 mose ; thyrsif erous, -rus (fero, I 

 bear), bearing a thyrse; thyrsiflor'us 

 (flos, floris, a flower), the flowers 

 in a thyrse ; thyr'siform (forma, 

 shape), shaped like a thyrse ; 

 thyr'soid (eloos, resemblance), like 

 a thyrsus ; Thyr'sula, the little 

 cyme which is borne by most 

 Labiates in the axil of the leaves. 



Tige, pr. teej (Fr., tige), stem ; 

 Tig'el, = Tigelle', Tigel'la, Tigel'- 

 lum, Tigel'lus, a miniature or 

 initial stem, used for (a) caulicle 

 or hypocotyl, (b) plumule ; tigella'- 

 tus, I (1) having a short stalk, as 

 the plumule of the Bean ; (2) when 

 the stalk is well marked ; Tigel'- 

 lula J a short filament or stalk 

 observed in the Truffle; tigellula'ris, 

 vascular. 



Tig'line, the acrid principle in the 

 seeds of Croton Tiglium, Linn. 



Tiller, a sucker or branch from the 

 bottom of the stem ; tillering, 

 throwing out stems from the base 

 of the stem ; Til'low (Crozier), = 

 TILLER. 



Tim'ber-line, the upper limit of ar- 

 boreal vegetation on the mountains. 



tinctor'ious, -rius, tinctorial (Lat., 

 pertaining to dyeing), used for Dye- 

 ing, imprinting colour. 



Tin'der - fung'us, Polyporus fomen- 

 tarius, Fr. 



Tinoleu'cite (relvw, I extend, + 

 LEUCITE), Van Tieghem's term for 

 directing spheres, the centrosomes. 



Tip, used by Grew for ANTHER. 



Tis'sue, the texture or material 

 formed by the union of cells of 

 similar origin and character, and 

 mutually dependent; tissues united 

 form systems, these again form 

 organs ; ~ Cord, central cord 

 (Crozier) ; aq'ueous ~ , a form of 

 hypoderma, consisting of thin- 

 walled parenchyma wanting chloro- 

 plastids, but containing much 



watery sap ; Conjun'ctive ~ , ground 

 tissue arising from the plerome or 

 young stele; cutic'ularized ~ , modi- 

 fied cell-walls, as epidermis and 

 periderm ; embryonic ~, = MERI- 

 STEM ; ex'tra-stelar <- , see GROUND 

 TISSUE ; false - = SPURIOUS ~ ; 

 glan'dular <~ , composed of secreting 

 cells or glands ; Ground <~ , funda- 

 mental tissue, neither vascular nor 

 epidermal, either within or without 

 the stele ; heterog'enous ~ , con- 

 sisting of various kinds of cells ; 

 homoge'neous ~, when the cells 

 are uniform ; intra ste'lar ~ = CON- 

 JUNCTIVE-TISSUE ; limitary ~ , 

 epidermal tissue ; parenchy'mat- 

 ous <~ , (a) thin-walled, as pith 

 cells ; (b) thick-walled, as collen- 

 chyma jfper'manent ~ , adult tissue ; 

 pri'mary ~ first formed tissue ; 

 prosenchy'matous <~ , woody tissue ; 

 sclerenchy'matous ~ , thickened or 

 hardened, as fibres or sclereids ; 

 sec'ondary ~, resulting from 

 growth from continuous meriste- 

 matic activity; sieve ~, of long 

 articulated tubes, communicating 

 by means of their sieve-plates in 

 their walls ; spu'rious ~ , an 

 approach to a tissue, by hyphas 

 massing into a felt, or their apices 

 forming a collective apical growing 

 point ; tegumen'tary ~, the ex- 

 ternal epidermal layer ; tra'cheal 

 ~ , composed of tracheids, especially 

 adapted for the conveyance of 

 liquids ; vas'cular ~ , the com- 

 ponents of the vascular system of 

 a plant. 



Tme'ma (r^/xa, section), a cell 

 ruptured in setting free a Moss- 

 gemma (Correns). 



tofa'ceus (Lat., formed of tufa), (1) 

 tufa-coloured, buffy drab ; (2) 

 gritty. 



Toise (Fr. , a fathom), a measure for- 

 merly used in France, 6 '395 feet, 

 1-9492 metre, 6 French feet. 



Tolu', a resinous exudation from 

 Myroxylon toluiferum, H. B. K. 



to'mentose, tomento'sus, tomen'tous, 

 densely pubescent with matted 



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