MARINE ALGA) OF BEAUFORT, N. C. 
Coalescent, becoming united by growth. 
Compacted, closely packed or pressed together. 
Conceptacle, a superficial cavity opening to the 
surface, within which reproductive organs are 
developed. 
Confervoid, composed of unbranched filaments, 
threadlike. 
Confluent, blended into one. 
Conglobate, collected into a ball. 
Conic, conical, cone shaped. 
Constricted, narrowed, contracted. 
Copulation, the union of sexual cells or organs. 
Coriaceous, leathery. 
Cortex, the tissue of a more or less solid alga lying 
beneath the epidermis, between this and the 
central region, medulla; when no epidermis is 
present, the outer region of the thallus surround- 
ing the medulla. 
Cortical, belonging to or occurring in the cortex. 
Corticated, provided with a cortex. 
Corymb, a flat-topped or convex cluster with the 
younger parts toward the middle. 
Corymbose, occurring in corymbs. 
Crateriform, cup shaped. 
Crenate, scalloped, provided with rounded, wavy 
teeth or notches. 
Cruciate, a method of division of a tetrasporangium 
by walls at right angles to each other, all of the 
four resulting tetraspores being visible in one 
plane, grouped around a common center. 
Crustaceous, the thallus consisting of a relatively 
thin layer closely adherent to the substratum 
and of brittle texture. 
Cryptostoma (pl., crypstostomata), a small cavity 
sunk in the thallus and bearing only hairs 
(paraphyses), found in the Fucacez. 
Cuneate, wedge shaped. 
Cuticle, the structureless layer bounding the outer 
surface of many plants. 
Cyathiform, shaped like a wineglass. 
Cylindric, elongated with a circular cross section. 
Cymose, occurring in a more or less broad, flat- 
topped cluster, with the younger parts toward 
the periphery. 
Cystocarp, a fruit produced as a result of the fer- 
tilization of the egg in the carpogonium, includ- 
ing the mass of carpospores, the accessory struc- 
tures, and the inclosing, cellular, protective 
structures, found in many of the Floridee. 
Cystocarpic, bearing cystocarps, used to designate 
the female plant. 
Decompound, divided several times. 
Decumbent, reclining, but with the apex ascending. 
Dentate, provided with sharp, toothlike structures. 
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Dichotomous, a method of branching by forking 
into two parts of approximately equal size. 
Dichotomy, a forking into two parts. 
Diffluent, becoming separate. 
Diecious, bearing male and female organs on sep- 
arate plants. 
Discoid, disklike, having a flat, rounded shape. 
Discrete, separate, not coalescent. 
Disporangium (pl., disporangia), a sporangium 
whose contents are divided into two spores. 
Dissepiment, a partition. 
Distichous, having the parts borne in two vertical 
rows, usually from the edges of a more or less 
flattened structure. 
Divaricate, extremely spreading. 
dm., abbreviation for decimeter, about 4 inches. 
Dorsal, referring to the upper, or back, surface of a 
dorsiventral structure. 
Dorsiventral, having unlike surfaces corresponding 
to back and front or upper and lower. 
Ectosarc, the horny outer covering of hydroids. 
Ellipsoid, having an elliptical shape. 
Elliptical, oblong with regularly rounded ends. 
Endochrome, the coloring matter contained within 
cells. 
Endophytic, growing within the tissue of another 
plant. 
Epidermal, belonging to the epidermis. 
Epidermis, a definite, differentiated layer of cells 
bounding the outer surface of a plant. 
Epiphytic, growing on another plant, using the host 
only for attachment, and not obtaining material 
from it. 
Eroso-denticulate, having minute, irregular, mar- 
ginal teeth, the margin being so irregular as to 
appear gnawed or bitten. 
Excentric, out of the center, one-sided. 
Exserted, protruding beyond the surface. 
False branching, a type of branching in which a 
cell in the midst of a filament elongates and, 
pushing to one side, continues the growth in a 
new direction, found principally in the Myxo- 
phycez. 
Farinaceous, rough and scaly in appearance. 
Fascicle, a close cluster of stems or branches. 
Fascicled, fasciculate, borne in a fasciclelike manner- 
Fastigiate, the occurrence of stems or branches in 
erect, parallel clusters. 
Fenestrate, pierced with holes. 
Filamentous, threadlike. 
Filiform, long, with a circular cross section. 
Fistulose, hollow throughout its length. 
Flabellate, fan shaped. 
Flabellum, a fan-shaped structure. 
Flaccid, limp, not rigid. 
