UMBELLIFER^. (PARSLEY FAMILY.) 173 



4. MOLLUGO, L. 



Sepals 5. Petals none. Stamens 5 and alternate with the sepals, or 3 and 

 alternate with tlie cells of the ovary. Styles 3, short. Capsule 3-valved, 3- 

 celled, many -seeded. — Prostrate diffusely-branched annuals. Leaves whorled. 

 Flowers white, on slender a.xillary peduncles. 



1. M. verticillata, L. Smooth ; leaves spatulate-lanceolate, unequal, in 

 wliorls of 4- 8; fruiting peduncles reflexed; stamens 3. — Cultivated ground, 

 common. Introduced. May -August. 



Order 67. UMBELLIFER^:. (Parsley Family.) 



Herbs, with chiefly hollow and fm-rowed stems, alternate mostly 

 compound leaves, with dilated or clasping petioles, and umbelled 

 flowers. Calyx tube coherent with the ovary ; the limb 5-lobed or ob- 

 solete. Petals 5, mostly incurved, inserted with the 5 stamens on the 

 edge of the disk that crowns the ovary. Styles 2. Friut composed 

 of 2 indehiscent carpels {mericarps), suspended from a filiform axis 

 {carpophore), and cohering by their inner face {commissure) ; each fur- 

 nished with 5 primary ribs, and often with a^ many secondary ones ; 

 the intervening spaces {intervals) usually containing channels {vittce), 

 which are filled with aromatic oil. Seed solitary, suspended. Em- 

 bryo minute, at the base of horny albumen. — Umbels and partial 

 umbels {umbellets) commonly subtended by an involucre or involucel. 



Synopsis. 



Suborder I. ORTHOSPERME^. Albumen of the seed flat and 

 straight on the inner face, not convolute nor involute. 



* Umbels simple or proliferous. 

 Teibe I. HYDROCOTYLE^. Fruit naked, laterally compressed, or globose. 

 Umbels axillary. Petals entire. Stems creeping. 



1. HYDROCOTYLE. Vitt* none. Fruit compressed. Leaves orbicular or ovate. 



2. CRANTZIA. Vittae 5. Fruit globose, corky. Leaves linear. 



Tribe II. S ANICUL.E^. Fruit bristly or scaly, globose or turbinate. Umbels capi- 

 tate, cymose. 



3. SANICULA. Fruit bristly, globose. Vittae numerous. Flowers polygamous. 



4. ERYNGIUM. Fruit scaly or granulate, turbinate. Vittse 5. Flowers perfect. 



* « Umbels compound or perfect. 

 Teibe III. AMMINEJE. Fruit laterally compressed, or nearly globose. Carpels 

 with 5 equal linear ribs, terete, or rounded on the back, wingless. 



■I- Flowers yellow. 



5. PIMPERNELLA. Leaves temately divided. Vittae numerous. 



6. BUPLEURUM. Leaves entire, perfoliate. Vittse mostly none. 



♦- -t- Flowers white. 



7. CICUTA. Fruit subglobose, Carpels with .'=ingle vittae in the intervals. Perennial. 



8. APIUM. Fruit ovate or globose. Carpels with single vittae. Annuals. 



