GLOSSARY. 



407 



Diadelphia. A Linnaean (335) class 

 having the sbimens. 



Diiult/phous (-us) Combined by their 

 filaments into two sets; 250. 



Duii/iwsis. A brief distinguishing char- 

 acter. 



DinypctttlcR, 341. 



Dialypetalous (-us). Same as polypeta- 

 luiis, i. e. of separate petals; 244. 



Dialyphyllvus (-us). Bearing separate 

 leaves. 



Diandrin. A Linnaean class with per- 

 fect dowers having only two stamens; 

 334. 



Diandrous (Diander, c.). Having two 

 stamens; 249. 



Diaphanous (-us). Letting the light 

 shine through. 



Dicarpellary. Composed of two carpels 

 or pistil-leaves; 201 



Dichusium. A two-parted or two-rayed 

 cyme; 152, 155. 



Dichlamydeous (-eus). Having a double 

 perianth; 191. 



Dichotomous (-us). Forked in pairs; 

 two-forked. 



Dichdyamous (-us), Dichogamy. Her- 

 maphrodite with one sex earlier de- 

 veloped than the other in the blossom; 

 219. 



Diclesium. Name of a fruit consisting 

 of an achenium within a separate and 

 free covering made of perianth, as that 

 of Mir.ibilis. 



Diclinous (Diclinis). When flowers are 

 of separate sexes ; 191. 



Dicoccous (-us). Fruits of two cocci. 



Dicotyledons, Dicotyledones. Plants of 

 the class marked by having two coty- 

 ledons ; 27, 339. 340, 344. 



Dicotyledonous (-eus). Having a pair of 

 cotyledons; 10, 314. 



Didyrnous (-us). Twin, found in pairs. 



Didynamin. The Linnaean class marked 

 by didynamij (335), i. e. 



Didynamous (-us). When a 4-androus 

 flower has the stamens in two pairs, 

 and one pair shorter than the other; 

 250. 



Diercsilis. Mirbel's name for a dry 

 fruit composed of several cells or car- 

 pels connate around a central axis, 

 and separating at maturity, as that of 

 Mallow. 



Difformis. Of unusual formation. 



Diffuse (-usus). Widely or loosely 

 spreading. 



Diyamous (-us). Of two sexes in the 

 same cluster. 



Digitate (-atus). Fingered ; a compound 

 leaf in which all the leaflets are borne 

 on the apex of the petiole; 101. 



Ditjitctttly. In a digitate mode; same 

 as Palmately. 



Digitate-Pinnate, 104. 



Ditjijnia. A Linnaean order character- 

 ized by having the gynoecium 



Diijijnous. With two separate styles or 

 carpels; 2G1. 



Dimerous (-us) Of two members in each 

 circle; 176. 



Dimidiate (-atus). Halved, or as if one- 

 half was wanting. 



Dimorphous (-us), Dimorphic, Dimor- 

 phism. Occurring under two forms; 

 225, 234 



Dicecia. Linna?an class (355) of plants 

 with the flowers 



Diuecious (Diascius, Dioicous). Unisex- 

 ual, and the two sexes borne by dis- 

 tinct individuals; 191. 



Diwcio-pulyyamous. When some indi- 

 viduals baar unisexual and others bi- 

 sexual flowers. 



Dipttalous (-us). Two-petaled; 244. 



Diphyllvus (-us). Two-leaved; 243. 



Dlpln. See Duplo. 



Diplostemonous, Diplostemoni/. Having 

 twice as many stamens as petals or 

 sepals ; 177, 198. 



Diploteyium. A capsule or other dry 

 fruit, invested with adnate calyx; an 

 inferior capsule. 



Dipterous -(us). Two-winged. 



Dire nipt ion (-io). Syn. of Chorisis; 202. 



DisciJ'erous (-us). Disk-bearing. 



Discijbrm (-onnis). Depressed and cir- 

 cular, like a disk or quoit. 



Discoidal or Discoid (Discoideus). Ap- 

 pertaining to a disk. A discoid head 

 is one destitute of ray-flowers. 



Disc or Disk (Discus). A word used in 

 several senses. The disk or c'Jjc of a 

 flower is a development of the torus 

 within the calyx, or within the corolla 

 and stamens ; 213. In a capitulum or 

 head of flowers it is the central part 

 of the cluster, or the whole of it as 

 opposed to a border or ray. It is the 

 face or surface of any organ, such as 

 a leaf-blade, as opposed to the mar- 

 gin. In vegetable anatomy, certain 

 round spots or markings on cell-walls 

 are termed discs. 



Discolor. When the two faces of a leaf, 

 &c.. are unlike in color. 



Discrete (-etus). Separate ; not coales- 

 ced. 



