138 THE SECOND BOOK OF BOTANY. 



EXERCISE XLVIL 

 Surfaces. 



The surfaces of plants are said to be SILKY when 

 the hairs are long, very fine, and pressed closely to 

 the surface, so as to present a silky appearance. 



ARACHNOID, when the hairs are very long, and 

 loosely entangled, so as to resemble cobweb, 



BEARDED, when the hairs are long, and placed in 

 tufts. % . 



DOWNY, or PUBESCENT, when the hairs form a 

 short, soft stratum, which only partially covers the 

 cuticle. 



HAIRY, when the hairs are rather longer, and 

 more rigid. 



VILLOUS, very long, very soft, erect, and straight. 



VELVETY, short, soft, very dense, but rather rigid, 

 forming a surface like velvet. 



^Estivation (Lat., cestivus, summer). 



Arachnoid (Gr., arachne, a spider). 



CocJilear (Lat., cochlea, a snail). 



Convolute (Lat., conwlutus, wrapped together). 



Cyme (Lat., cyma, a sprout). 



Decussate (Lat., decussatus, cut crossways). 



Dichotomous (Gr., dichotomos, divided into two). 



Distichous (Gr., dis, twice ; stichos, a rank). 



Heterodromous (Gr., eteros, another ; dromos, course). 



Homodromous (Gr., omios, similar). 



Induplicate (Lat., in, in ; duplicatus, doubled). 



Marcessent (Lat., marcesco, I decoy). 



Phylotaxis (Gr.,' phullon, a leaf; taxis, order). 



Quincuncial (Lat., quincunx, an arrangement of five). 



Supervolute (Lat., super, upon ; wlutus, rolled). 



Vexillary (Lat., vexillum, a standard). 



Villose (Lat., mllus, wool). 



