358 MANUAL OF BOTANY 



called channels {vaUecvlce), h; in the pericarp are frequently oil- 

 receptacles called viitcB. Seed pendulous ; embryo minute, /, at 

 the base of abundant horny albumen, d; radicle pointing to- 

 wards the hUum. 



Diagnosis. — Herbs or shrubs. Stems generally hoUow ; 

 leaves alternate, usually compound and amplexicaul, or some- 

 times simple, and always exstipulate. Flowers arranged in 

 umbels, or rarely in capitula. Calyx superior, inconspicuous. 

 Petals and stamens 5, inserted on the outside of a double 

 fleshy epigynous disc. Ovary Inferior, 2-ceUed, with a solitary 

 pendulous ovule in each cell ; styles 2. Fruit consisting of two 

 indehiscent carpels, which separate when ripe from a common 

 axis or carpophore. Each carpel bearing primary or secondary 

 ridges, or both. Seeds pendulous, one in each carpel, with a 

 minute embryo at the base of abundant horny albumen. 



Division of the Order and Illustrative Genera : — The order 

 has been divided into three sub-orders from the appearance of 

 the albumen, but these are by no means well defined. They 

 are as follows : — 



Sub-order 1. Oethosperme*. — Albumen not curved. Ilhis- 

 trative Genera : — Hydroootyle, Linn. ; CEnanthe, Linn. ; 

 Heracleum, Linn. 



Sub-order 2. Campylospeemb^. — Albumen rolled inwards at the 

 margins, and presenting a vertical furrow on its face. Illus- 

 trative Genera : — Anthrisous, Hoffm. ; Chserophyllum , Linn. ; 

 Conium, Linn. 



Sub-order 3. Coslospeeme^. — Albumen with the base and apex 

 curved inwards towards the axis. Illustrative Genera : — 

 Ormosciadium, Boiss. ; Coriandrum, Linn. 



By Bentham and Hooker this order has been divided as 

 follows : — 

 Series 1. HbteeosciadiejE. — Umbels generally simple or very 



irregularly compound, or the inflorescence is a capitulum. 



Vittffi absent or obscure. Illustrative Genera : — Hydrocotyle, 



Linn. ; Astrantia, Linn. ; Eryngium, Linn. 

 Series 2. Haplozygie^. — Umbels compound. Primary ridges 



of fruit alone conspicuous. Vittse usually, but not always, 



obvious. Illustrative Genera: — Conium, Linn.; Myrrhis, 



Scop. ; Fceniculum, Adanson. 

 Series 3. Diplozygib.«e. — Umbels usually compound. Fruit 



with both primary and secondary ridges generally well marked. 



Illustrative Genera:— Caucalis, Linn. ; Caucus, Linn. 



