Glossary. 427 



Tu'ber (L. tuber, a protuberance or tumor) : a short and thick underground 

 stem beset with numerous " eyes," like the potato. Fig. 205. 



Tu'bercle (L. tuberculutn, diminutive of tuber) : a small, knob-like outgrowth 

 such as occurs on the roots of Leguminosae for the habitation of nitrify- 

 ing bacteria. Fig. 13. Tuber'culate : beset with tubercles. 



Tuberif'erous (L. tuber -\-ferre, to bear) : tuber-bearing. 



Tu'berous : producing or resembling tubers. 



Tu'berous root: a root thickened and tuber-like. Figs. 217 and 218. 



Tuft'ed : growing in clusters or clumps. 



Tumes'cent: (L. tumescens, swelling up) : somewhat tumid. 



Tu'mid (L. tumidus, swollen) : swollen. 



Tu'nicate (L. tunica, an under garment) : having concentric coats like the 

 onion. 



Tur'binate (L. turbinatus, cone-shaped) : shaped like a top or inverted 

 cone. 



Tur'gid (L. turgidus, swollen) : swollen. 



Um'bel (L. umbella, a sunshade) : a kind of indeterminate inflorescence 

 (older flowers toward the circumference) having the pedicels of the indi- 

 vidual flowers radiating from about the same plane on the common 

 peduncle. Fig. 83,7. 



Um'bellate : occurring in umbels; pertaining to an umbel. 



Um'bellet : a secondary umbel. 



Umbelliferous (L. umbel -\-ferre, to bear): producing or bearing umbels. 



Umbel'liform (L. umbel + forma, shape) : having the form of an umbel. 



Unarmed' : destitute of prickles and the like. 



Un'dulate (L. undulatus, wavy) : with a wavy surface or margin; repand. 

 Fig. 232. 



Une'qual : applied to stamens of diverse lengths. 



Unguic'ulate (L. unguis, a nail or claw) : having a claw or a narrow, stalk- 

 like base. 



Uni- (L. unus, one) : in composition signifying one or single. 



Ur'ceolate (L. urceolus, diminutive of urceus, a pitcher) : hollow and cylin- 

 drical or ovoid, and more or less contracted below the mouth. 



U'tricle (L. utriculus, diminutive of uter, utris, a bag or bottle of animal 

 skin) : a small, bladder-like body; a small, thin-walled, one-seeded fruit. 

 Fig. 326. 



Valv'ate (L. valva, a wing or fold of a folding door) : opening by valves; 



joining at the edges without overlapping. Fig. 283. 

 Valve : one of the parts into which a dehiscent capsule splits. 



