( 392 .) 
CALLI'TRICHE* * 
Linncan Class and Order. MoNCECiAf, Mona'ndutaJ. 
Natural Order. Callitrichi'ne/E, Link. — Lindl. Syn. p.242 ; 
Introd. to Nat. Syst. of Bot. p. 176. — Mack. FI. Hibern. p. 238. — 
Halora'ge^e, Dr. R. Brown. — Loud. Hort. Brit. p. 514. — Don’s 
Gen. Syst. of Gard. and Bot. v. ii. p. 700. — Hook. Brit. FI. (4th ed.) 
p. 405. — Naiades, Juss. Gen. PI. p. 18. — Sm. Gr. of Bot. p. 66. — 
Quernealf.s; sect. Hippurinas ; type, HiPPURiDACEiE ; subty. 
Callitriciiidas ; Burn. Out!, of Bot. v. ii. p.523, 576, & 577. — 
Inundate, Linn. 
Gen. Char. Flowers usually monoecious, sometimes perfect. 
Calyx none. Corolla (see figs. 1 & 3.) when present, (it is want- 
ing in some species,) of 2 oblong, pointed, opposite, equal petals 
[hracteas of some authors ). — Sterile Flower (fig. 1). Filament 1, 
hair-like, gradually elongated. Anthers terminal, kidney-shaped, 
1 -celled, opening by a transverse suture . — Fertile Flower (figs. 2 
and 3). Germen (see fig. 2.) superior, 4-lobed. Styles hair-like, 
spreading, with pointed stigmas. Capsule (see fig. 3.) 4-lobed, lobes 
laterally compressed, indehiscent, with four 1-seeded cells. 
The pointed stigmas ; and the solitary, 4-lobed, indehiscent 
capsule, of four 1-seeded cells; will distinguish this from other 
genera in the same class and order. 
Three species British. 
CALLI'TRICHE VERNA. Spring Water-Starwort. Star- 
headed Water Chick weed. Water Fennel Vernal Stargrass. 
Spec. Char. Peduncles very short, with 2 bracteas (? petals) 
at their base. Fruit apparently sessile, regularly 4-angled, each 
lobe bluntly keeled at the back. 
Ft. Dan. t. 129. — Linn. Sp. PI. p. 6. — Willil. Sp. PI. v. i. pt. r. p. 28. — Sm. 
Engl. FI. v. i. p. 10. — With. (7th ed.) v. ii. p. 6. — Lind!. Syn. p. 243. — Hook. Brit. 
FI. p. 381. — Don’s Gen. Syst. of Gard. and Bot. v. ii. p. 704. — Macr. Man. Brit. 
Bot. p. 80. — Liglitf. FI. Scot. v. i. p. 70. — Ahbot’s FI. Bcdf. p. 1. — Davies’ Welsh 
Bot. p. 2. — Part. Midi. FI. v. i. p. 49. — Johnst. FI. Berw. v. i. p. 3. — Winch’s FI. 
of Northumh. and Durh. p. 58. — Walker’s FI. ofOxf. p. 2. — Bab. FI. Bath. p. 17. ; 
Prim. Flor. Sam. p. 36. — Dick. FI. Abred. p. 53. — Irv. Lond. FI. p. 200. — Luxf. 
Reig. FI. p. 78. — Cow. FI. Guide, p. 25. — Mack. FI. Hibern. p. 239. — Callitriche 
aquatica, Engl. Bot. t. 722. — Hook. FI. Lond. t. 127. — Iluds. FI. Angl. (2nd cd. ) 
p. 439, a St j3. — Sm. FI. Brit. v. i. p. 8, a St (3. — Sibth. FI. Oxon. p. 2, a St 3 . — 
Relh. FI. Cant. (3rd ed.) p. 4, a St /3. — Hook. FI. Scot. p. 259. — Grev. FI. Edin. p. 
188. — FI. Devon, pp. 145 St 111. — Mack. Catal. PI. of Irel. p. 7. — Callitriche 
pollens, Gray’s Nat. Arr. v. ii. p. 555. — Stellar ia, Ray’s Syn. p. 289. ; and 
Stellaria minor et repens, ibid. p. 289. 
Localities. — In ditches, ponds, and slow streams; common. 
Annual. — Flowers in April and May. 
Root of very long slender fibres. Stems slender, thread-shaped, 
branched, minutely pustulate, varying in length according to their 
situation in deep or shallow water. Leaves opposite, connate, very 
Fig. 1. A Staminiferous Flower. — Fig. 2. A Fistilliferous one. — Fig. 3. A Cap- 
sule, divided transversely. — All magnified. 
* From hallos, Gr. beautiful; and thrix, Gr. hair. Withering 
■f See folio 83, note +. j See folio 49, note t. 
