IIORTUS JAMAICEN.SrS. 



"S5S 



rcorcous. Consisting of two cohering 

 grains or cell;-, with one seed in each. 



Dito I'YILDONES. Those plants which have 

 seeds that split into two lobes in germi- 

 nating. 



Didynamia. The name of the fourteenth 

 classin Linneus's Artificial System, com- 

 prehending those plants which have her- 

 maphrodite flowers, with four stamens in 

 two pairs of different lengths; the outer 

 pair longer, the middle pair shorter and 

 converging. These flowers have one pis- 

 til, and the corolla is irregular either 

 rirtgent or personate. 



Diffokmis flos. A difform, anomolous, or 

 irregular flower, or corolla The parts 

 of which do not correspond eitherin size 

 or proportion. 



Difformis lorsio. The twisting of astern one 

 way and then another. 



Difformia folia. Difform leaves. Of differ- 

 ent shapes on the same plant. 



Diffused stem. Having spreading branch- 

 es Diffusa panicula, hanging loose. 



Dicjtate leaf. When a simple or undivid- 

 ed petiole connects several distinct leaf- 

 lets at the end of it. The Digitate leaf, 

 to correspond with the name, should have 

 five leaflets sprr ading out like the open 

 fingers; but Linneus makes bvnate, ter- 

 wate, and quinate leaves to be species of 

 the digitate ; and the leaves of horse- 

 chesnut, though they have more leaflets 

 than five, are nevertheless calle i digitate. 



Digynia. The name of an order in Lin- 

 neus's Artificial System, comprehend- 

 ing those plains which have two pistils to 

 a flower. This order is the second in the 

 first thirteen classes, except the ninth 



D midiatus. Halved. 



Dioica. A dia:cious plant. Having male and 

 female flowers on distinct individuals. 

 Hence 



DifECiA. The twenty-second class in Lin- 

 neus's Artificial System, comprehending 

 those plants which have no hermaphro- 

 dite flowers ; but male and female flow- 

 ers on distinct individuals. 



BiPETALeus. Tvvo-petalled. 



Diphyllous. Two-leaved. 



Disk of a leaf. The whole surface Disk 

 of a flower, is the central part in radiate 

 compound flowers, consisting generally 

 of regular corrollules or florets : it is ap- 

 plied to other aggregate flowers, when 

 the florets towards the middle differ from 

 those in the circumference, as in umbels. 



Dispermus. Two-seeded. 



DtssECTUM Gashed. 



Dissipimentum. See Partit ; on. 



DlssiLiENSpericaipium. A dissilient, burst- 

 ing or elastic pericarp or fruit. 



Distich us. Two- ranked. 



Distinct leaves Quite separate from each 

 other. 



Divaricate Standing out wide. 



Diverging branches. Making a right angle 

 with the stem 



Dodecandria. Twelve-stamened. The 

 name of the eleventh class in Linneus's 

 Artificial System ; comprehending all 

 those plants which have hermaphrodite 

 flowers with from twelve to nineteen 

 stamens inclusive. 



DoLABRiFORSfE. Axe or hatchet- shaped 

 leaf. Compressed, roundish, obtuse, c,ib- 

 bous on the outside with a sharp edge, 

 roundish below. 



Dorsal awn. Fi>ed to the back or outer 

 side of the glume, not springing from 

 the end 



Dotted leaf. Besprinkled or pounced with 

 hollow dots or points. 



Down is properly the English term for 

 some sorts of pubescence ; but it is used 

 also for the J'appus or little crown, fixed 

 on the top of some seeds, by which they 

 fly. 



Drooping. The top or end pointing to the 

 ground. 



Dkupa. A drupe is the pulpy pericarp or 

 fruit without valves, containing a nut or 

 stone with a kernel. 



Drupace^. The thirt. -eighth order in 

 Linneus's Fragments of a Natural Me- 

 thod ; containing those trees which bear 

 a drupe or plum. 



Dumoss fdumus, a bush). The nineteenth 



order 



