MARINE ALG OF BEAUFORT, N. C. 
Trichogyne, the slender prolongation of the female 
organ (carpogonium) of the Floridee with which 
the male cell fusesas the beginning of fertilization. 
Trichome, any hairlike outgrowth from the surface. 
Trichothallic, a method of growth in a thallus bear- 
ing apical hairs by cell divisions at the bases of 
the hairs between these and the wider part of 
the thallus. 
Trichotomous, a method of branching by forking 
into three approximately equal parts. 
Truncate, appearing as if cut off at the end. 
Turgid, distended by the pressure due to the cell 
contents. 
Undulate, wavy. 
Uniaxial, having a single primary axis. 
Unilateral, one sided, borne on or turned to one side. 
Unilocular, a term used for the sporangia of many 
Phezophycee which are not divided into sep- 
arate compartments, but produce numerous mo- 
tile spores in the single cavity of the sporangium. 
Unisexual, bearing the organs of only one sex on a 
single individual. 
Urceolate, pitcherlike. 
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Vacuole, a cavity in the living material of cells, 
containing a clear, watery solution, the cell 
sap. 
Ventral, referring to the lower, or front, surface of 
a dorsiventral structure. 
Verrucose, appearing as if having warts, warty. 
Verticillate, arranged in a whorl of similar parts 
around an axis. 
Vesicle, a small, bladderlike structure or cavity. 
Vesicular, possessing vesicles. 
Virgate, long, slender, and unbranched, wand 
shaped. 
Zonate, a method of division of a tetrasporangium 
by three walls in the same plane, all four result- 
ing tetraspores being visible from the surface, 
lying in a single row. 
Zonation, the superficial marking of a thallus by 
concentric lines. 
Zoospore, a motile spore. 
Zygote, the cell formed by the fusion of two sexual 
cells. 
