788 



LABIATE. LI. GLECHON. LII. KEITHIA. 



Ciliated-leaved Gleclion. Shrub procumbent. 



9 G. RI'NGENS (Benth. lab. p. 409.) leaves petiolate, ovate, 

 quite entire, rather canescent on both surfaces ; floral leaves 

 small ; calycine teeth lanceolate, shorter than the tube ; corolla 

 3 times the length of calyx : upper lip elongated, falcate. Tj . F. 

 Native of the South of Brazil, Sello. Shrub clothed with hoary 

 tomentum, with the habit of Helidnthemumhalimifolium. Leaves 

 glandular ; floral leaves shorter than the calyxes. Corolla 

 downy outside. Whorls 6-10-flowered. 



jRingent-fiov/ered Glechon. Shrub erect. 



10 G. MYRTOI'DES (St. Hil. mss. ex Benth. lab. p. 409.) 

 branches villous ; leaves ovate, crenated, narrowed at the base, 

 green on both surfaces, or rather canescent beneath, roughish ; 

 calyx tubular, with lanceolate, acute teeth, which are shorter 

 than the tube; upper lip of corolla erect, arched. ^ . G. Na- 

 tive of Brazil in elevated places, on Serra do Papagaio, in the 

 province of Minas Geraes. Shrub much branched. Floral 

 leaves conforming to the others, equalling the calyxes. Corolla 

 blue, about half again as long as the calyx. Odour of Mentha 

 Pulegium. Habit between Glechon and Keilhia rubiacea. 



Myrtle-like Glechon. Shrub 3-4-feet. 



Cult, For culture and propagation, see Gardbquia, p. 787. 



LII. KEITH I A (named in honour of the Rev. Patrick Keith, 

 F. L. S., a distinguished physiological botanist, and author of 

 " System of Physiological Botany," two vols. 8vo. London, 1816.) 

 Benth. lab. p. 409. 



LIN. SYST. Didndria, Monogynia. Calyx tubular, about 1 3- 

 nerved, striated, with an equal or oblique mouth, and 5 nearly 

 equal teeth ; throat naked, or villous inside. Corolla with an 

 exserted tube, and a bilabiate limb : upper lip erect, emarginate, 

 flat : lower lip spreading, trifid, with flat nearly equal lobes. 

 Two lower stamens fertile, ascending, without any vestiges of 

 the upper ones ; anthers 2-celled, with a thick connective and 

 distinct divaricate cells. Lobes of style nearly equal, or the 

 lower one is longest and flattened, involving the base of the 

 upper one. Herbs, sub-shrubs, or shrubs. Whorls sometimes 

 axillary and sometimes approximating into terminal spikes. Co- 

 rollas usually scarlet. This genus differs from Melissa in the 

 more regular calyx, and the abortion of the 2 upper stamens, 

 which latter character alone separates it from Gardbquia. 



SECT. I. ERIOTHY'MUS (from epiov, erion, wool ; and 

 thymos, thyme; woolly thyme.) Benth. lab. p. 410. A shrub, 

 with divaricate leafy branches. Cymes pedunculate, few-flow- 

 ered. Throat of calyx villous inside. Upper lip of corolla 

 bifid. Perhaps a proper genus. 



1 K. RUBIA V CEA (Benth. lab. p. 410.) shrubby; branches and 

 leaves nearly glabrous ; cymes umbel-formed, clothed with soft 

 hairs ; calyx acutely toothed. Jj . G. Native of Brazil, in 

 the province of Minas Geraes, on mountains at Villa Ricca and 

 elsewhere. Angles of branches pubescent. Leaves \ an inch 

 long, sessile, ovate, obtuse, quite entire, glabrous, rounded or 

 sub-cordate at the base. Throat of calyx closed by a ring of 

 hairs. Stamens exserted. 



Rubiaceous Keithia. Shrub. 



SECT. II. KEI'THIA (see genus for derivation.) Benth. lab. p. 

 410. Branches herbaceous, elongated, procumbent, leafy. Whorls 

 axillary, few-flowered. Throat of calyx naked inside. Upper 

 lip of corolla scarcely emarginate. 



2 K. SCUTELLARIOIDES (Benth. lab. p. 4 10.) branches glabrous 

 or ciliated on the angles ; leaves glabrous ; flowers nearly ses- 



sile ; corolla hardly twice as long as the calyx. % . G. Native 

 of Brazil, in the province of Minas Geraes, on the top of Mount 

 Itambe, Mart. ; and in marshes near Silio, &c., South of Brazil, 

 Sello. Leaves sessile, lanceolate, crenated, cordate at the base. 

 Whorls usually 6-flowered, secund. Corolla downy outside, 

 purple. Stamens equalling the corolla. 

 Skull-cap-like Keithia. PI. procumbent. 



3 K. PILOSA (Benth. lab. p. 411.) branches, leaves, and calyxes 

 pilose ; flowers almost sessile ; corolla more than twice the length 

 of the calyx. I/ . ? G. Native of Brazil, in humid pastures, at 

 Morangara and near Castro in Campos Geraes, in the province 

 of St. Paul, St. Hil. ; South of Brazil, Sello. Habit of the pre- 

 ceding, but the flowers are generally solitary, and twice the size. 

 Corolla deep purple, 9-10 lines long. 



Pilose Keithia. PI. procumbent. 



4 K. CILIA'TA (Benth. lab. p. 732.) erect ; leaves and calyxes 

 ciliated with long stiff' hairs ; whorls sub-racemose ; flowers 

 sessile ; corolla half again as long as the calyx. 1;. ? F. Na- 

 tive of Texas. Herb a little branched ; branches clothed with 

 fine tomentose pubescence. Leaves | to 1 inch long. Whorls 

 6-flowered. 



Ciliated Keithia. PI. foot. 



SECT. III. RHABDOCAU'LON (from pafiSos, rhabdos, a twig; and 

 KavXov, kaulon, a stem ; in reference to the twiggy branches.) 

 Benth. lab. p. 411. Under shrubs or herbs; branches twiggy, 

 erect, leafy at the base, or nearly altogether naked. Whorls 

 approximating into terminal spikes. Calyx acutely toothed ; 

 throat very villous inside. 



5 K. VILLOSA (Benth. lab. p. 411.) stem erectish, branched, 

 clothed with hoary villi ; leaves sessile, oblong-linear, obtuse, 

 with revolute margins, villous on both surfaces ; racemes spike- 

 formed, dense, a little branched ; whorls 6-flowered ; flowers 

 sessile ; corolla about twice as long as the hoary villous calyx. 

 If.. 1 F. Native of the South of Brazil, Sello. Leaves 5 an 

 inch long. Corollas villous outside. Stamens hardly exserted. 



bilious Keithia. PI. 1| foot. 



6 K. LAVANDULOI'DES (Benth. lab. p. 411.) stem erect, 

 branched, clothed with silky tomentum ; leaves sessile, oblong- 

 linear, acute, with sub-revolute edges, silky on both surfaces : 

 racemes spike-formed, dense, interrupted at the base ; whorls 

 many-flowered ; flowers sessile ; corolla half again as long as 

 the calyx. 1( . ? G. Native of Brazil, in the province of Minas 

 Geraes, in fields near Congonhas do Campo ; and in humid 

 places near Fazenda de Carapicuva, in the province of St. Paul, 

 St. Hil. ; South of Brazil, Sello. Nearly allied to A", villusa, but 

 differs in the pubescence being short, silky, and adpressed, and 

 in the corollas being shorter, &c. 



Lavender-like Keithia. PI. li foot. ? 



7 K. GRA'CILIS (Benth. lab. p. 412.) stem herbaceous ; branches 

 erect, tetragonal, almost naked, nearly glabrous ; raceme termi- 

 nal ; whorls remote, 2-6-flowered ; teeth of calyx acute. 2/ . ? 

 F. Native of Brazil, in grassy fields, in the provinces of Minas 

 Geraes, St. Paul, and Rio Grande do Sul. Stems nearly simple, 

 glabrous, or with lines of pubescence. Leaves few, 2-3 lines long : 

 floral ones and bracteas hardly a line long. Corolla purplish, 

 pubescent, half as long again as the calyx. Stamens inclosed. 



Slender Keithia. PI. 1 to 1| foot. 



8 K. DENUDA'TA (Benth. lab. p. 412.) stem herbaceous; 

 branches erect, somewhat articulated, nearly naked, glabrous ; 

 racemes short, terminal, dense ; flowers pedicellate ; corolla 

 more than twice as long as the calyx, which is pubescent. ^ .? 

 F. Native of Brazil, in dry desert fields, in the province of 

 Minas Geraes, Mart, and St. Hil. ; South of Brazil, Sello. 

 Stems rising from a hard base, almost simple. Leaves few, ses- 



