AMMIACEAE. 313 



wide distribution, abundant in South Africa. Type species: Centella villosa L. 



1. Centella asiatica (L.) Urban in Mart. Fl. Bras. II 1 : 287. 1879. 



Hydrocotyle asiatica L. Sp. PL 234. 1753. 

 Hydrocotyle repanda Pers. Syn. 1 : 302. 1805. 

 Centella repanda Small, Fl. SE. U. S. 859. 1903. 



Stem 2-15 cm. long. Petioles 0.5-3 dm. long, sometimes pubescent; blades 

 ovate, rather thick, rounded at the apex, broadly cordate at the base, not 

 peltate, 2-4 cm. long, repand-clentate ; pedicels much shorter than the leaves, 

 1-5 cm. long; umbellets capitate, 2-4-flowered, subtended by 2 ovate bracts; 

 flowers nearly sessile ; fruit 45 mm. broad, about 3 mm. high, prominently 

 ribbed and reticulated. 



Moist ground, Abaco, Great Bahama, Andros, New Providence, Great Exuma, 

 Eleuthera, Fortune Island and North Caicos : Bermuda : Maryland to Florida and 

 Texas ; Jamaica ; Cuba ; Hispaniola ; Guadeloupe : Martinique ; continental tropical 

 America; Old World tropics. Recorded by Dolley presumably as Hydrocoiijlc um- 

 bcllata L. OVATE-LEAVED MARSH PENNYWORT. 



3. ANETHUM [Tourn.] L. Sp. PI. 263. 1753. 



Erect, mostly annual, glabrous herbs, vvith decompound leaves and small 

 yellow flowers in many-rayed compound umbels. Involucre and involucels 

 none, or of very few bracts. Calyx teeth obsolete. Petals suborbicular. 

 Stylopodium small, conic. Fruit elliptic or ovate, flat, margined; carpel-ribs 

 slender; oil-tubes solitary in the intervals. [Greek, like anise.] A few 

 European and Asiatic species, the following typical. 



1. Anethum graveolens L. Sp. PI. 263. 1753. 



Stem terete, simple or branched, slender, 3-9 dm. high. Leaves tripin- 

 nately dissected into nearly filiform segments, the petiole somewhat sheathing ; 

 umbel 12 cm. wide or le?s; involucre and involucels none; rays slender, 4-7 cm. 

 long; umbellets several-many -flowered; petals bright yellow; fruit ovate- 

 elliptic, about 6 mm. long, distinctly margined. 



Waste and cultivated grounds, escaped from cultivation, Andros, Harbor Island, 

 Eleuthera, Long Island and Dellis' Cay : escaped in Guadeloupe, Martinique and 

 other West Indian Islands and in Florida. Native of Europe. DILLWEED. 



4. FOENICULUM Adans. Fam. PI. 2: 101. 1763. 



Erect glabrous herbs, with pinnately decompound leaves, the segments 

 linear or capillary, and compound umbels of yellow flowers. Involucre and 

 involucels none. Calyx-teeth obsolete. Stylopodium large, conic. Fruit linear- 

 oblong, glabrous, terete, or nearly so. Carpels half-terete, dorsally flattened, 

 prominently ribbed ; oil-tubes solitary in the intervals. Seed-face flat, or 

 slightly concave. [Latin, diminutive of foenum, hay, from its odor.] About 

 4 species, of the Old World. Type species: Anethum Foeniculum L. 



1. Foeniculum Foeniculum (L.) Karst. Deutsch. Fl. 837. 1882. 



Anethum Foeniculum L. Sp. PI. 263. 1753. 

 Foeniculum vulgare Gaertn. Fr. & Sem. 1 : 105. 1788. 



Perennial, 6-12 dm. high. Leaves dissected into capillary segments ; 

 petioles broad, clasping; umbels large, 9-25-rayed, the rays rather stout, 

 somewhat glaucous, 2-8 cm. long in fruit; pedicels 2-8 mm. long; fruit about 

 6 mm. long. 



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