Tas. 8441. 
PEROVSKIA ATRIPLICIFOLIA. 
Afghanistan to Western Tibet. 
LABIATAE, Tribe MONARDEAE. 
Perovsk1A, Karel.; Benth. et Hook. f. Gen. Plant. vol. ii. p. 1198 (Perowskia). 
Perovskia atriplicifolia, Benth. in DC. Prodr. vol. xii. p. 261; Boiss. Fl. 
Orient. vol. iv. p. 589; Aitchison in Journ. Linn. Soc. vol. xviii. p. 86; 
Hook. f. Fl. Brit. Ind. vol. iv. p. 652; André in Rev. Hort, 1905, p. 844, cum 
tab. col. (omnes sub nomine Perowskia); species P. scrophulariaefoliae, 
a Bunge, arcte affinis, sed caulibus brevissime stellato-tomentosis incanis, 
foliis basi multo angustioribus differt. 
Frutex, 1-1°5 m, altus. Caules erecti, stricti, teretes, brevissime stellato- 
tomentosi, incani, superne ramosi. olia ovato-lanceolata vel lanceolata, 
majora 4-6 em. longa et 1°2-2°5 cm. lata, subacuta, irregulariter serrata 
vel inciso-serrata, basi gradatim angustata, primo plus minusve pilis 
simplicis vel stellatis vestita, demum fere glabrescentia, utrinque resinoso- 
z glandulosa, subtus venis primariis prominentibus; petiolus 0°5-1'5 cu. 
longus. Jnjflorescentia paniculitormis, 3-5 dm. longa, ramulis numerosis 
strictis gracilibus spiciformibus. Verticil/astri numerosissiml, 2-6-flori, 
plus minusve dissiti. Bracteolae anguste ovatae vel lanceolatae, calyce 
breviores. Flores sessiles vel brevissime pedicellati. Calyx tubulosus, 
3-4 mm. longus, leviter 2-labiatus, dense albo-hirsutus, resinoso-glandu- 
. losus; labium superum inaequaliter 3-dentatum ; labium inferam 2-denta- 
. ' ¢um; dentes deltoidei, acuti, 0°5-1 mm. longi. Corolla coerulea, circiter 
1 em. longa, parce pilosa; tubus tubuloso-infundibuliformis, 5-6 mm. 
longus, intus oblique annulato-pilosus ; limbus patens, planus, 2-labiatus ; 
labium superum 4-lobum, 4-5 mm. longum, 5 mm. latum, lobis ovatis 
vel suborbicularibus, 1°5-2 mm. longis 1°25-2°5 mm. latis; labium 
inferum indivisum, elliptico-ovatum, 3-4 mm. longum, 3 mm. latum. 
Stamina 4, 2 postica minima, sterilia, inclusa, 2 antica fertilia, subinclusa 
vel longe exserta. Nucu/ae obovoideae, basi disco leviter denticulato cinctae. 
Stylus inclusus vel exsertus.—S. A. SKAN. 
The Labiate genus Perovskia, to which the plant here 
& figured belongs, is a somewhat anomalous one, comprising 
four species, two of which are natives of Turkestan with a 
; third confined to Beluchistan, and a fourth, the one now 
; depicted, which extends from the mountains of Afghanistan 
through the Western Himalaya to Western Tibet. In the 
Karakoram Range it is met with at elevations up to 
10,000 feet above sea level. Dr. Aitchison has reported it 
as plentiful in certain parts of the Kuram Valley, and 
described it as being singularly striking when in flower. 
The flowers in Afghanistan are usually lavender-coloured, 
Jung, 1912, 
