GLOSSARY. 



487 



lip of corolla, the stamens or lip 

 on the upper side. 



Symmetrical, with the same number 

 of parts in each circle throughout 

 the flower. 



Sympetalous, petals more or less 

 united into one piece, so that one 

 can not be taken away from the 

 rest without tearing. 



Synsepalous, sepals more or less 

 united. 



Taproot, a single and often strong 

 root descending perpendicularly in- 

 to the earth. 



Terete, round in the sense of cylin- 

 dric. 



Temate, occurring or divided into 

 threes. 



Thorn, a sharp-pointed hard woody 

 organ, homologous with a stem. 



Throat, the upper expanded portion 

 or orifice of the corolla-tube. 



Thyrse, a close or contracted ovate 

 panicle; thyrsoid, resembling a 

 thyrse. 



Tomentose, covered with soft or wool- 

 ly hairs. 



Torulose, cylindrical but bulging ir- 

 regularly at intervals. 



Tri-, a prefix to Latin words, three or 

 thrice. 



Trichotomous, forking, with the three 

 divisions from the same point and 

 nearly equal. 



Trifid, 3 -cleft to the middle or some- 

 what more or less. 



Tripinnate, thrice pinnate. 



Triquetrous, 3-sided. 



Truncate, cut off squarely at the end. 



Tuber, a thickened fleshy and more or 

 less rounded underground stem or 

 root. 



Tubular, shaped like a tube or hollow 

 cylinder. 



Tufted, short, close, and several or 

 many together from the same stock. 

 (See Caespitose.) 



Turbinate, top-shaped. 



Turgid, distended or inflated. 



Umbel, branches nearly equal and 

 proceeding from the same point, 

 so as to form a flat-topped flower 

 cluster. 



Umbellet, one of the secondary um- 

 bels of a compound umbel. 



Umbilicate, depressed in the center. 



Undulate, wavy or wavy-margined. 



Unisexual, flowers containing pistils 

 only, or stamens only. 



Urn-shaped, urceolate, globular and 

 contracted at the mouth like an urn 

 or pitcher. 



Utricle, a 1-seeded carpel with loose 

 coat. 



Vein, in a leaf, a branch of a sec- 

 ondary rib or nerve. 



Ventral, relating to or borne on the 

 face. 



Ventricose, distended or swollen on 

 one side and not on another. 



Venulose, having veins. 



Versatile, swinging, turning freely 

 on its support. 



Virgate, long, slender and straight, 

 like a virga or rod. 



Vitiform, grape-like. 



Xerophyte, a plant adapted to live 

 in dry soil, on the desert, in sand 

 or on rocky ridges, chiefly charac- 

 terized by great thickening of the 

 epidermis, condensation of the plant 

 body, or reduction of the leaf sur- 

 face. Cactus, Buck-brush, Man- 

 zanita and Pickeringia are typical 

 xerophytes. 



NEW NAMES OF FIRST EDITION 



The following is a list of new names and new combinations, both specific 

 and varietal, published in the first edition, with citation of pages to facilitate 

 reference. The first edition was issued April 16, 1901. 



Agoseris grandiflora Greene var. Allium attenuifolium Kell. var. 



INTERMEDIA JepSOn, p. 500. MONOSPERMUM Jepsoil, p. 120. 



Agropyron arenicolum Davy, p. 76. Allocarya californica (F. & M.) 



