( 365 .) 
LATHRiE'A* *. 
Linncan Class and Order. Didyna'miaI, Angiospe'rmia +. 
Natural Order. Oroba'nciiea;, Jhss . — Lindl. Syn. p. 193.; 
Introd. to Nat. Syst. of Bot. p. 227. — Rich, by Macgilliv. p. 433. — 
Loud. Hort. Brit. p. 529. — Don’s Gen. Syst. of Gard. and Bot. v. iv. 
p.627. — Mack. FI. Hibern. p. 205. — Hook. Brit. FI. (4th edit.) p. 
4] 4. — Akin to Pediculares, Juss. Gen. PI. pp. 99 & 101. — Sm. 
Gram, of Bot. p. 96. — Syringales; subord. Primulos^e ; sect. 
Menthina:; type, Orobanchacea: ; Burn. Outl. of Bot. v. ii. 
pp. 900, 958, & 960. — Person atas, Linn. 
Gen. Char. Calyx (fig. 1, b.) inferior, of 1 sepal, bell-shaped, 
in 4 deep, upright, nearly equal segments, permanent. Corolla 
(fig. 2.) of 1 petal, tubular, 2-lipped ; the upper lip concave, cloven 
or entire ; the lower lip smaller, spreading, blunt, 3-cleft. Nectary 
(see fig. 3, a.) a depressed gland, at the base of the germen. Fi la- 
ments 4, didynamous, awl-shaped, shorter than the corolla, and 
concealed by its upper lip. Anthers (see fig. 2.) converging, blunt, 
their lobes pointed beneath. Germen (fig. 3, b.) roundish, or egg- 
shaped, compressed. Style (fig. 3, c.) cylindrical, as long or longer 
than the stamens. Stigma blunt, notched, bent downwards. Cap- 
sule (figs. 5 & 6.) roundish, blunt, with a point, of one cell, and 
two membranous elastic valves (fig. 8.), invested with the enlarged 
inflated calyx. Placentas ( receptacles ) parietal, two to each valve 
(see fig. 8). Seeds (see figs. 8 & 9.) few, globose, rough. 
The 4-cleft calyx ; the gland at the base of the germen ; and the 
1-celled capsule; will distinguish this from other genera in the 
same class and order. — One species British. 
LATH ICE' A SQUAMA'RIA. Scaly-rooted Tooth wort §• Greater 
Toothwort. Clown’s Lungwort. 
Spec. Char. Flowering branches upright, quite simple. Flowers 
somewhat pendulous, in 1-sided, spike-like racemes ; lower lip of 
the corolla in 3 lobes. 
Engl. Bot. t. 50. — FI. Dan. t. 136. — Linn. Sp. PI. p. 844. — Huds. FI. Angl. (2nd 
edit.) p. 266. — Willd. Sp. PI. v. iii. pt. I. p. 201. — Sm. FI. Brit. v. ii. p. 654. ; 
Engl. FI. v. iii. p. 127. — With. (7th ed.) v. iii. p. 731. — Lindl. Syn. p. 194.. — Hook. 
Brit. FI. p. 285. — Macr. Man. Brit. Bot. p. 175. — Don’s Gen. Syst. of Gard. and 
Bot. v. iv. p. 634. — Light. FI. Scot. v. i. p. 326. — Sibth. FI. Oxon. p. 191. — Abb. 
FI. Bedf. p. 136. — Purt. Midi. FI. v. i. p. 292. ; and v. iii. p. 366. — Hook. FI. Scot, 
p. 187. — Grev. FI. Edin. p. 135. — Rev. G. E. Smith’s PI. S. Kent, p. 33. t. 3. — 
Johnst. FI. Berw. v. ii. p. 284. t. viii. — W inch’s FI. of Northumbl. and Durli. p. 
41. — Walker’s FI. of Oxf. p. 175. — Linn. Soc. Tr. v. xvi. p. 399. t. 22 & 23. — Bab. 
FI. Bath. p. 35. — Irv. Lond. FI. p. 127. — Luxf. Reig. FI. p. 54. — Mack. Catal. PI. 
of Irel. p. 58. ; FI. Hibern. p. 207. — Lathrcca simplex, Gray’s Nat. Arr. v. ii. 
Fig. 1. a. A Bractea; b. Calyx. — Fig. 2. Corolla. — Fig. 3. a. Gland; b Germen; 
C. Style. — Fig. 4. Calyx, &c. — Fig. 5. Capsule. — Fig. 6. Same divested of Calyx. — 
Fig. 7. Transverse section of ditto. — Fig. 8. Capsule opened vertically, showing 
the 2 valves, the placentas, and the seeds. — Fig. 9. Seeds. — Fig. 10. A Seed mag- 
nified. — Fig. 11. Vertical section of the same, showing the Albumen and the 
Embryo, ditto. — Fig. 12. The Embryo separated, ditto. 
* From latkraios, Gr. hid, or concealed ; the plant being much concealed by 
the earth or dead leaves. Hookeu. 
f See folio 31, note t. } See folio 72, note }. 
$ From the resemblance of the scaly roots to the human fore-teeth, and hence it 
was fancied formerly to be good for the tooth-ache. 
