LABIATJE. LXXI. CEDRONELLA. LXXII. MELITTIS. LXXIII. PHYSOSTEGIA. 



815 



celled ; cells parallel. Style about equally bifid at top ; lobes 

 subulate, stigniatiferous at apex. Achenia dry, smooth. 

 Herbs. Whorls approximate into terminal spikes or racemes. 

 Floral leaves bractea-formed. Bracteas small, setaceous. 



1 C. CORDA'TA (Bentli. lab. p. 502.) herbaceous, stolonifer- 

 ous ; leaves cordate-ovate, crenated ; whorls few-flowered, se- 

 cund, approximating into short spikes or racemes. TJ. . H. 

 Native of North America, at the river Ohio, below Pittsburgh, 

 Nuttall. Dracocephalum cordatum, Nutt. gen. amer. 2. p. 35. 

 Stems creeping, and rooting at the base. Floriferous branches 

 erect, simple, villous. Leaves 1 to lg inch long, form of those 

 of Lamium. quite entire, obtuse, pubescent, or nearly glabrous. 

 Cymes on short peduncles, 1-3-flowered. Corolla showy, pale 

 blue, 1^ inch long. 



CWate-leaved Cedronella. Fl. July, Aug. Clt. 1824. PL 

 A foot. 



2 C. MEXICA V NA (Benth. lab. p. 502.) tall ; leaves ovate- 

 lanceolate, cordate at the base, toothed ; whorls many-flowered, 

 approximating into a terete, interrupted spike or raceme. If. 

 H. Native of Mexico, among corn and in meadows, in the 

 woody region near Valladolid, Pazcuaro, Chalco, and Tlal- 

 puxahua. Dracocephalum Mexicanum, H. B. et Kunth, nov. 

 gen. amer. 2. p. 502. Herb glabrous, or finely pubescent. 

 Leaves on short petioles, 1^ to 2 inches long, acuminated, acute, 

 glandular beneath. Whorls loose, 20-40-flowered. Corolla 

 purplish, 3 times as long as the calyx. Genitals exserted. 



Mexican Cedronella. PI. 2 to 3 feet. 



3 C. TRIPHY'LLA (Moench, meth. 411.) shrubby, tall; leaves 

 ternate : leaflets oblong-lanceolate ; whorls loose, collected 

 into terete oblong spikes, f? . F. Native of America, and 

 probably of the Canary Islands. Dracocephalum Canariense, 

 Lin. spec. p. 829. C. Canariensis, &c., Comm. hort. amst. 2. 

 p. 81. t. 41. Yolk, noi ib. t. 145. Lateral leaflets sessile, ter- 

 minal one petiolate, larger, all nearly glabrous, or pubescent be- 

 neath. Whorls 10-12-flowered. Corolla white or pale purple, 

 scarcely twice as long as the calyx. The plant was first brought 

 to Europe under the name of Pcrmenta de Tana. It is now 

 known under the name of Balm of Gilead, which it has obtained 

 from its rich odour on being gently rubbed. 



Three-leated Cedronella, or Balm of Gilead. Fl. July, Sept. 

 Clt. 1697. Shrub 3 to 4 feet. 



Cult. For culture and propagation see Dracocephalum, p. 

 814, for the herbaceous species, and Prostanthera, p. 800, for 

 the shrubby kind. 



Tribe IX. 



STACHY'DE-E (this tribe contains genera agreeing with 

 Stachys, in the characters given below.) Benth. lab. p. 503. 

 Calyx irregularly veined or 5-10-nerved, equal, oblique, rarely 

 sub-bilabiate, 3-10-toothed. Tube of corolla inclosed or exserted, 

 often annulate inside ; limb bilabiate : upper lip galeate or flat, 

 entire or emarginate : lower lip variously trifid. Stamens 4, 

 ascending, didynamous, all fertile, or the anthers of the lower 

 ones are empty or dimidiate ; superior ones short. 



LXXII. MELITTIS (from /JtXirra, melitta, a bee ; a name 

 used by Pliny as synonymous with Melissa.) Lin. gen. no. 731. 

 Schreb. gen. 985. Juss. gen. p. 116. Benth. lab. p. 503. 



Lix. SVST. Didynamia, Gymnospermta. Calyx campanulate, 

 membranaceous, irregularly veined, subbilabiate; upper lip broad, 

 roundish, obscurely 2-lobed or shortly 2-3-toothed ; lower lip 

 bifid, with rounded lobes. Corolla, with an ample exserted 



1 



tube, which is not annulate inside, and a bilabiate limb ; superior 

 lip orbicular, entire, rather concave, spreading : lower lip 3- 

 lobed, spreading. Stamens 4, ascending, didynamous, lower 

 ones the longest ; filaments without any appendages ; anthers 

 approximating by pairs, 2-celled : cells distinct, diverging. 

 Style shortly bifid at apex ; lobes ovate, stigmatiferous at apex. 

 Achenia dry, smooth, or finely reticulated. 



1 M. MELISSOPHY'LLCM (Lin. spec. p. 832.) 3f. H. Native 

 of Europe, in shady places ; as of France, Germany, Portugal, 

 Spain, Sicily, Italy, Greece : in England ; as in Devonshire, 

 about Totness, Barnstable, &c. ; Hampshire, in the New Forest ; 

 Pembrokeshire, about Haverford West, in woods and other shady 

 places. Stems erect, simple, more or less hairy. Leaves on 

 short petioles, 1 1 to 2 inches long, ovate, crenated, cordate at 

 the base, or the upper ones are rounded, wrinkled, villous, green 

 on both surfaces ; floral leaves narrower ; all exceeding the 

 flowers. Whorls about 6-flowered, axillary. Corolla 1| inch 

 long, red, or red and white. Pedicels rather shorter than the 

 calyxes. Much honey is secreted by a gland that encircles the 

 base of the germ ; hence it is a favourite plant with bees. 



Var. a, grandtflbra ; plant pale green ; corolla cream-coloured, 

 with the middle of the lower lip violaceous. 3. H. M. grandi- 

 flora, Smith, fl. brit. 2. p. 644. engl. bot. U 636. Hook. fl. 

 lond. vol. 2. icone. Rchb. icon. bot. eur. 3. p. 41. t. 242. M. 

 melissophyllum, Curt. lond. no. 64. Mill. fig. t. 32 Riv. mon. 

 irr. t. 21. f. 1. M. albida, Guss. prod. fl. sic. 2. p. 140. M. 

 sylvestris, Lara. fl. fr. 2. p. 401. 



/ ar. /3, ntelistophyllum ; stems purplish ; leaves deep green ; 

 flowers altogether purple, and sometimes white. Tf.. H. M. 

 melissophyllum, Jacq. fl. austr. 1 . t. 26. Smith, engl. bot. t. 

 577. Rchb. icon. boU eur. 3. p. 41. t. 241. 



Balm-leaved Bastard Balm. Fl. May, June. England. PI. 

 1 to l foot. 



Cult. Both varieties are very showy when in blossom, and 

 are, therefore, well fitted for decorating flower borders, woods, 

 and shrubberies. They are readily increased by dividing the 

 root in spring or autumn. 



LXXIII. PHYSOSTE'GIA (from jvaa, physa, a bladder ; 

 and (rrtyu, ttego, to cover ; in allusion to the inflated calyx.) 

 Benth. in bot. reg. vol. 15. lab. p. 504. Dracocephalum spe- 

 cies, Lin. and other authors. 



LIN. STST. Didynamia, Gymnospermia. Calyx tubularly cam- 

 panulate at the time of florescence, but afterwards becoming in- 

 flated and campanulate, with about 10 obscure veins, almost 

 equally 5-toothed, or truncate and scarcely toothed at top. Corolla 

 with a long exserted tube, which is exannulate inside, an inflated 

 throat, and a bilabiate limb ; upper lip erectish, rather concave, 

 entire, or emarginate ; lower lip spreading, trifid, with roundish 

 lobes, the middle lobe large and emarginate. Stamens 4, ascend- 

 ing under the upper lip, somewhat didynamous ; lower ones emi- 

 nent ; anthers approximate, 2-celled : cells parallel, distinct, 

 naked. Style about equally bifid at top ; lobes subulate, stig- 

 matiferous at apex. Achenia dry, smooth. Habit peculiar. 



1 P. VIRGINIA'NA (Benth. lab. p. 504.) calyx acutely 5-tooth- 

 ed. I/. . H. Native of North America, from Canada to Texas, 

 in rather humid places : and on the North-west coast at the Co- 

 lumbia river. Dracocephalum Virginianum, Lin. spec. 828. 

 Curt. bot. mag. t, 467. D. lancifolium, Moench. meth. p. 410. 

 D. variegatum, Vent. eels. t. 44. D. denticulatum, Ait. hort. 

 kew. 2. p. 317. Curt. bot. mag. 214. D. speciosum, Sweet, fl. 

 gard. 1. 1. 93. D. obovatum, Elliott, bot. car. 2. p. 86. D. inter- 

 medium, Nutt, in amer. phil. trans, n. s. 5. p. 1 87. Prasium pur- 

 pureum, Walt. fl. car. p. 166. Prasium coccmeum, Walt. fl. car. 



