GLOSSARY OF BOTANICAL TERMS 



Corona: A crown, or crownlike organ 

 or part, as in the flower of a milk- 

 weed (Asclepias). (Fig. 21.) 



Corymb: A con- 

 vex or flat- 

 topped open 

 flower cluster, 

 with the pedi- 

 cels arising 

 from different 

 points on the 

 stem, the flow- 

 ers developing 

 from axillary 

 buds and the 

 outer and lower 

 ones blooming 

 earliest (fig. 

 22), the inflo- 

 rescence thus 

 being indeter- 

 minate and cen- 

 tripetal. 



C orymbose : 

 Borne in a co- 

 rymb ; corymb- 

 like. (Fig. 22.) 



Cospecific: Belonging 

 species. 



Costate: Ribbed. 



Cotyledon: An embryo leaf or seed 

 leaf; the leaf, or one of a pair or 



Figure 21. — Flower 

 of a milkweed ( As- 

 clepias sp.) ; : a, 

 Incurved horns of 

 corona hoods : &, 

 corona, composed 

 of five hoods, or 

 cucullate, petaloid 

 segments ; c, co- 

 rona column ; d, 

 five reflexed co- 

 rolla segments, or 

 petals : e, pedicel 



to the same 



22. — Corymbose inflores- 

 in yarrow {Achillea) 



whorl of the first leaves put forth 

 from a sprouting seed. The number 

 of cotyledons is of primary impor- 

 tance in the classification of flower- 

 ing (seed) plants. Thus, a grass or 

 sedge is always a monocotyledon ; 

 legumes are always dicotyledons. 

 Cotvpe: Specifically, one or two or 

 more specimens on which the origi- 

 nal description of a species, variety, 

 or other nomenclatural unit is based, 

 when such species, variety, or other 



41723 s — 31 2 



nomenclatural unit evidently rests 

 on more than one specimen and the 

 author neglects to indicate a type ; 

 a specimen of the original series on 

 which a nonholotypic species (or 

 other nomenclatural unit) is based; 

 a part type (syntype is also occa- 

 sionally used to convey the same 

 idea). Also, but loosely, an isotype, 

 paratype, or duplicate of a type 

 specimen, i. e., a plant (or animal I 

 of the same species (or other nomen- 

 clatural status) as the type specimen 

 (holotype) and collected simultane- 

 ously at the same site by the same 

 collector. 



Cremocarp: The peculiar dry twin 

 fruit, characteristic of the parsnip, 

 or umbellifer family (Apiacea?, 

 Pastinacacese. or Unibelliferse) , which 

 separates at maturity into a pair of 

 opposite, indehis- 

 c e n t. 1-seeded 

 carpels (ineri- 

 carps) pendu- 

 lous by thread- 

 like appendages 

 from a central 

 axis (placenta, or 

 carpophore). A 

 form of schizo- 

 carp. (Fig. 23.) 



Crenate: Scal- 

 loped ; having 

 broad, rounded 

 teeth on the mar- 

 gin. (Fig.30.E.) 



Crenulate: Mi- 

 nutely crenate. 



Crucifer: A mem- 

 ber of the mus- 

 tard or crucifer 

 family (Brassi- 

 cacese, or Cruci- 

 ferse). Literally. 

 '• cross bearer," 

 alluding to the 

 4-petaled, cross-shaped flowers. 



Cryptogam: A nonseed-producing plant 

 of lower rank than the flowering 

 plants. Thus, fungi, alga?, lichens, 

 mosses, and ferns are cryptogams. 



Cucullate: Hooded (Latin, cuculla, a 

 hood). (Figs. 24 and 32, A, g. and 

 B. g.) 



Figure 24. — Cucul- 

 late petal of flower 

 of Ceanothus 



Cucurbit: A plant of the squash, pump- 

 kin, or melon family (Cucurbita- 

 ceae). 



Figure 23. — Crem- 

 ocarp. as in a 

 parsnip or other 

 umbellifer ; a a, 

 Twin mericarps 

 pendulous on 

 threadlike ap- 

 pendages from 

 6, the carpo- 

 phore ; o, pedi- 

 cel. The cap- 

 like appendage 

 on each nieri- 

 carp is the per- 

 sistent base of 

 the style (sty- 

 lopodium) 



