EXOGENOUS OR DICOTYLEDONOUS PLANTS. 



459 



strong fibres. The singular structure of the blossom may be learned 

 from Fig. 541 - 545, and the subjoined illustrations. 



888. Ord. Jasminacea; (Jessamine Family) consists of a few chiefly 

 Asiatic shrubs, with compound leaves and fragrant flowers ; differ- 

 ing from Oleacese by the imbricated or twisted asstivation of the 

 hypocratei'iform corolla, the erect seeds, &c. — £!x. Jasminum, the 

 Jessamine. Cultivated for ornament, and for their very fragrant 

 blossoms. • — Menodora, or Bolivaria, has mostly simple leaves and 

 four ovules in each cell, but evidently pertains to this order. 



889. Ord, Oleacea; (Olive Family). Trees or shrubs, with oppo- 

 site leaves, either simple or pinnate. Calyx persistent. Corolla 



FIG. 1069. Flower-bud of the common Milkweed (Asclepias Cornuti). 1070 Expanded 

 flower ; the calyx and corolla reflexed ; showing the stamineal crown 1072. One of the hood- 

 ed appendages of the latter removed and seen sidewiee, with its included process or horn. 

 1073. A vertical section of a flower (the hooded appendages removed) through the tuhe of sta- 

 mens, the thick stigma, ovaries, &c. 1074 Flower with the calyx and the fertilized enlarging 

 ovaries, crowned with the large stigma common to the two, from the angles of the peltate sum- 

 mit of which the pairs of pollen-masses, detached from the anther cells, hang by their stalks or 

 candicle from a gland. 1075. Fruit (follicle) of the Common Milkweed. 1076. Cross-section 

 of the last, in an early state. 1077. Detached placenta in fruit, covered with seeds. 1078. 

 Seed (cut across), with its coma 1079 Section of the seed, parallel with the cotyledons. 

 1080. Vertical section of the seed perpendicular to the face of the cotyledons. 



