GLOSSARY. 



407 



Diadelphia. A Linntean (335) class 



having the stamens. 



Diadelphous (-us). Combined by their 

 filaments into two sets ; 250. 



Diagnosis. A. brief distinguishing char- 

 acter. 



Dialypetalas, 341. 



Dialypetalous (-us). Same as polypeta- 

 lous, f . e. of separate petals ; 244. 



Dialyphyllous (-us). Bearing separate 

 leaves. 



Diandria. A Linnaean class with per- 

 fect flowers having only two stamens ; 

 334. 



Diandrous ( Diander, &c. ). Having two 

 stamens; 249. 



Diaphanous (-MS). Letting the light 

 shine through. 



Dicarpellary. Composed of two carpels 

 or pistil-leaves ; 261. 



Dichdsium. A two-parted or two-rayed 

 cyme; 152, 155. 



Dichlamydeous (-eus). Having a double 

 perianth; 191. 



Dichotomous (-us). Forked in pairs ; 

 two-forked. 



Dichdgamous (-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 Mirabilis. 



Diclinous (Didinis). When flowers are 

 of separate sexes ; 191. 



Dicoccous (-ws). 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. 



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



Didyndmia. The Linnsean class marked 

 by didynamy (335), i. e. 



Didynamous (-us). When a 4-androus 

 flower has the stamens in two pairs, 

 and one pair shorter than the other ; 

 250. 



Dieresilis. 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. 



Diffamous (-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. 



Digitately. In a digitate mode; same 

 as Palmately. 



Digitate-Pinnate, 104. 



Digynia. A Linnsean order character- 

 ized by having the gynoscium 



Digynous. With two separate styles or 

 carpels ; 261. 



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. 



Di&cia. Linnaean class (355) of plants 

 with the flowers 



Dioecious (Dicecius, Dioicous). Unisex- 

 ual, and the two sexes borne by dis- 

 tinct individuals ; 191. 



Diaecio-polygamous. When some indi- 

 viduals bear unisexual and others bi- 

 sexual flowers. 



Dipetalous (-ws). Two-petaled ; 244. 



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



Diplo. See Duplo. 



Diplostemonous, Diplostemony. Having 

 twice as many stamens as petals or 

 sepals ; 177, 198. 



Diplotegium. A capsule or other dry 

 fruit, invested with adnate calyx ; an 

 inferior capsule. 



Dipterous -(us). Two-winged. 



Diremption (-io). Syn. of Chorisis; 202. 



Disciferous (-us). Disk-bearing. 



Disciform (-ormis). 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 dac of a 

 flower is a development oT 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. 



