UMBELLIFER^E. ( PARSLEY FAMILY.) 173 



4. MOLLUGO, L. 



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

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

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

 Flowers white, on slender axillary peduncles. 



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

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

 common. Introduced. May -August. 



OKDER 67. UMBEL LIFERS. (PARSLEY FAMILY.) 



Herbs, with chiefly hollow and furrowed stems, alternate mostly 

 com pound leaves, with dilated ov 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. Fruit composed 

 of '2 indehiscent carpels (riiericarps), suspended from a filiform axis 

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

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

 the intervening spaces (interra/x) 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. 



SriK>Rr>ER I. ORTHOSPERME7R. Albumen of the seed flat and 

 straight on the inner face, not convolute nor involute. 



* Umbels simple or proliferous. 



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

 Umbels axillary. Petals entire. Stems creeping. 



1. HYDROCOTYLE. Vittre none. Fruit compressed. Leaves orbicular or ovate. 



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



TRIBE II. SANICULE^E. Fruit bristly or scaly, globose or turbinate. Umbels capi- 

 tate, cymose. 



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



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



* * Umbels compound or perfect. 



TRIBE III. AMMINE^E. Fruit laterally compressed, or nearly globose. Carpels 

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



H- Flowers yellow. 



5. PIMPERNELLA. Leaves ternately divided. Vittae numerous. 



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



H- - Flowers white. 



7. CICUTA. Fruit subglobose. Carpels with single vittse in the intervals. Perennial. 



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



