814 



LABIATE. LXX. DRACOCEPHALUM. LXXI. CEDRONELLA. 



Stems a little branched, pubescent. Floral leaves twice the 

 size of the cauline leaves, green, scarcely pubescent. Whorls 

 usually 10- 12- flowered. Calyx a little coloured. Corollas very 

 slender, purplish. 



Thyme-flowered Dragon's-head. Fl. June, Sept. Clt. 1752. 

 PI. 1 to li foot. 



21 D. NUBIANS (Lin. spec. p. 831.) stem erect ; leaves petio- 

 late, ovate, crenated ; floral leaves oblong-lanceolate, more en- 

 tire ; whorls distinct, many-flowered, disposed in long racemes ; 

 bracteas ovate or oblong, almost quite entire ; upper tooth of 

 calyx broad-ovate : lower ones lanceolate ; corolla more than 

 twice as long as the calyx. Q. H. Native throughout Siberia. 

 Ker. bot. reg. t. 841. Zornia nutans, Mcench, meth. p. 411. 

 Gmel. sib. 3. p. 231. t. 49. Habit, leaves, and calyxes of D. 

 thymrflbrum, but differs in the longer corollas, &c. 



A r u/an-racemed Dragon's-head. Fl. July, Aug. Clt. 1731. 

 PI. 1 foot. 



22 D. FRUTICULOSUM (Steph. in Willd. spec. 3. p. 152.) suf- 

 fruticose, glabrous ; leaves nearly sessile, elliptic, mucronate, 

 quite entire, or the superior and floral ones are aristately tooth- 

 ed; whorls few-flowered, the superior ones subspicate ; brac- 

 teas ovate, aristately toothed ; teeth of calyx all lanceolate : the 

 upper one the broadest ; corolla scarcely twice as long as the 

 calyx. fj . F. Native of Siberia, Steven ; about Kiachta, 

 Sievers. Stem branched. Leaves 4 lines long. Calyx colour- 

 ed. Corollas like those of D. integrifbl'mm. 



Shrubby Dragon's-head. Shrub dwarf. 



23 D. INTEGRIFOLIUM (Bunge, in Ledeb. fl. alt. 2. p. 387.) 

 suffruticose, glabrous ; branches erectish ; leaves nearly sessile, 

 lanceolate, obtuse, quite entire ; floral leaves bractea-formed ; 

 whorls racemose, secund ; bracteas ovate, aristately toothed ; 

 upper tooth of calyx broad-ovate : lower ones lanceolate ; co- 

 rolla about twice as long as the calyx. T? . F. Native of the 

 Altaia, on the Kurtschum mountains, near Baty, and on rocks 

 near the ruins of Ablakit; also of Dahuria. Habit of D. nutans, 

 but the leaves are very different. Calyx purple. Corollas pur- 

 plish blue. 



Entire-leaved Dragon's-head. Shrub 1 foot. 



SECT. V. RUYSCHIA V NA (so named in honour of Dr. Ruysch, 

 who was professor of anatomy and botany at Amsterdam.) 

 Benth. lab. p. 499. Stems erect, leafy. Whorls somewhat in- 

 terruptedly spicate. Anthers villous. 



24 D. ARGUNE'NSE (Fisch, ex Link, enum. 2. p. 118.) gla- 

 brous ; stems erect ; leaves linear-lanceolate, quite entire, gla- 

 brous ; whorls subspicate ; bracteas cuneate-elliptic, acute ; ca- 

 lyx quite glabrous, bilabiate : upper lip semitrifid : lower one 

 narrowly bipartite ; corolla ample, about 3 times as long as the 

 calyx. 11,. H. Native of Dahuria. Rchb. icon. pi. cult. 1. 

 t. 1. Lodd. bot. cab. 797. Nearly allied to the following; but 

 differs in the glabrous calyxes and larger flowers. Leaves nearly 

 sessile, 2-3 inches long, with fascicles of small ones in the axils. 

 Corollas pubescent, blue, showy. 



Argun Dragon's-head. Fl. July, Aug. Clt. 1822. PI. 1 

 to 1J foot. 



25 D. RUVSCHIA'NUM (Lin. spec. p. 830.) stems erect, finely 

 pubescent : leaves linear-lanceolate, quite entire, glabrous ; 

 whorls subspicate ; bracteas ovate-lanceolate, quite entire ; calyx 

 pubescent ; upper tooth of calyx ovate : lower ones lanceolate ; 

 corollas more than twice as long as the calyxes. If. . H. Native 

 of Europe and Asiatic Russia, on the mountains ; as of Nor- 

 way, Provence, Dauphiny, Switzerland, Galicia, Caucasus, 

 Altaia, &c. Oed. fl. dan. t. 121. D. hyssopifolium, Mart, ex 

 Steud. nom. p. 285. Ruyschiana spicata, Mill. diet. no. 1. 

 Zornia linearifolia, Mcench, ex Steud. nom. p. 285. Zanon. 



nov. t. 146. Ruyschiana glabra, Amm. ruth. p. 50. Branched 

 from the base. Leaves 1 to \\ inch long, nearly sessile, with 

 revolute edges, having young ones in the axils. Whorls approxi- 

 mate, generally 6-flowered. Corolla purplish, an inch long. 



Ruysch' s Dragon's-head. Fl. June, July. Clt. 1699. PI. 

 2 feet. 



26 D. AUSTRI ACCM (Lin. spec. p. 829.) stems erect, rather 

 pilose ; leaves 3-5-cleft, or the rameal ones are almost entire ; 

 segments of leaves linear, with revolute edges ; whorls some- 

 what interruptedly spicate ; bracteas 3-7-cleft, awned ; upper 

 tooth of calyx ovate : lower ones lanceolate ; corolla about 3 

 times as long as the calyx. I/ . H. Native of Europe and 

 Asiatic Russia, on the mountains ; as of the Pyrenees, Dau- 

 phiny, Switzerland, South of Germany, Galicia, Transylvania, 

 Podolia, Caucasus, &c. Jacq. icon, rar. 1. t. 112. Zornia par- 

 tita, Mcench, ex Steud. nom. p. 285. Ruyschiana laciniata, 

 Mill. diet. no. 2. Ruyschiana hirsuta, Amm. ruth. p. 50. 

 Habit of D. Ruyschiana, but differs in the leaves being divided. 

 Stem hairy, nearly pinnatifid. Whorls 6-10-flowered, all usu- 

 ally distinct. Floral leaves and bracteas hispid. Corolla showy 

 blue, more than lg inch long. 



Austrian Dragon's-head. Fl. June, July. Clt. 1597. PI. 

 li foot. 



f Doubtful species. 



27 D. ODORATI'SSIMUM (Poir. suppl. 2. p. 521.) stems slender; 

 branches divaricate ; leaves petiolate, small, ovate-oblong, quite 

 entire, narrowed at tlie base, glabrous ; bracteas narrow-lanceo- 

 late, ciliated, longer than the flowers ; flowers sessile, approxi- 

 mating into a short imbricate spike ; calyx striated, ciliated, 

 with 5 very short straight teeth. I/. H. Native of the Crimea. 

 Branches reddish-grey, with pubescent angles. Leaves 4-5 

 lines long. Corolla white or purplish, hairy outside ; tube 

 slender, scarcely longer than the calyx ; throat wide. 



Very sweet-scented Dragon's-head. PI. ^ to - foot. 



28 D. COCHINCHINE'NSE (Lour. coch. p. 371.) stem erect, 

 villous ; leaves ovate-lanceolate, quite entire, villous, few ; 

 bracteas roundish, acute, many-flowered ; flowers disposed in a 

 terminal spike. O- ? H. Native of Cochinchina. Flowers 

 violaceous ; upper lip of corolla concave. Filaments pilose. 



Cochinchina Dragon's-head. PI. 1 foot. 



Cult. The greater part of the species of Dracocephalum, 

 being showy when in blossom, are favourites with all lovers of 

 flowers. They are all hardy, and will grow in any common 

 garden soil ; they are, therefore, well adapted for decorating 

 flower borders and rockvvork. The perennial species are rea- 

 dily increased by divisions of the root and top in spring. The 

 seeds of annual kinds only require to be sown in the open 

 ground in spring. The two shrubby species, D. fruticulbsum 

 and D. integrifolium, and all the species belonging to sect. I. 

 Keimodracon, will require protection in severe weather in 

 winter ; these are all readily propagated by cuttings, under a 

 hand-glass. 



LXXI. CEDRONE'LLA (probably a dim. of KcSpos, cedros, 

 the cedar ; from the sweet odour of C. triphylla.} Mcench, 

 meth. p. 411. Benth. lab. p. 501. Dracocephalum species, 

 Lin. and other authors. 



LIN. SYST. Didynamia, Gymnospermia. Calyx tubular or 

 campanulate, about 15-nerved, with an equal or oblique 5-tooth- 

 ed mouth. Corolla with an exserted tube, naked inside, a dilated 

 throat, and a bilabiate limb ; upper lip straight, flattish, emargi- 

 nately bifid ; lower lip trifid : middle lobe large. Stamens 4, 

 ascending, didynamous : lower ones the shortest. Anthers 2- 



