80 DR. 7. E. Т. AITCHISON ON THE BOTANY OF 
coloured at the tips, while in this they are not; hence we suspect a different species may 
have been sent to St. Petersburg under this name. 
CARDUUS PYCNOCEPHALUS, Jacq.; Boiss. Fl. Or. iii. р. 520. 
Hari-rud valley: 437, Мау 11, 1885. A troublesome weed in cultivated land. 
CNICUS ACARNA, Linn.— Cirsium Acarna, Mcench ; Boiss. FI, Or. iii. p. 549. 
Hari-rud valley: 750, July 30, 1885. On the margins of cultivation ; common, in. 
good soil. 
Oxicus ARVENSIS, Hoffm.— Cirsium arvense, Scop.; Boiss. Fl. Or. iil. p. 552. 
А common weed, in cultivated land. 
ONOPORDON LEPTOLEPIS, DC.?; Boiss. Fl. Or. iii. p. 564. 
Khorasan: 704, June 30, 1885. Our plant is identical with Griffiths specimens 
numbered 680 and 932, and Stocks's 1066. We have seen no authenticated specimens of 
0. leptolepis, and Boissier does not mention Griffith and Stocks's specimens. It is a 
very characteristic plant of these regions, being common in the Hari-rud valley as well 
as in Khorasan, growing in gravelly soil. It reaches five feet in height, is slender in 
habit, and covered with large extremely showy flower-heads. 
JURINEA VARIABILIS, Aitch. et Hemsl., п. вр. (Plate XXXIV.) Herba perennis ?, 6-18 
poll. alta, саше tantum infra medium foliosa, ssepius tricephala, ad collum lanata. 
Folia lanceolato-oblonga, usque ad 4 poll. longa, integra, dentata vel alte pinnati- 
fida, preecipue subtus cano-lanata; radicalia in petiolum attenuata ; caulina sessilia, 
amplexicaulia. Capitula usque ad 14 poll. diametro; involucri bractez pluri- 
seriatee, rectæ, acutissimse, glabrescentes, extimse brevissimæ, longiores, roses; 
receptaculi squamz vere paleacez, acute, acheniis duplo triplove longiores. 
Achenia (matura non visa) levia, glabra, pappo multoties breviora; pappus copiosus, 
longe plumosus, setis 2—5 interioribus longioribus. 
Paropamisus range: 572, May 26, 1885. Common everywhere. Sheep do not eat it. 
Allied to J. adenocarpa and J. chetocarpa, differing in its relatively naked, smooth 
achenes. The accessible material is too scanty to allow of our testing the constancy of 
these characters. Our plant is identical with Griffith’s no. 3317. 
JURINEA MONOCEPHALA, Aitch. et Hemsl.,n.sp. Affinis J. variabili, differt foliis linearibus 
vel lineari-lanceolatis, collo vix lanato, caulibus monocephalis, involucri bracteis 
brevioribus, patentibus, achzeniis longioribus, pappo breviore minus plumoso. 
Khorasan: 682, June 18, 1885. Іп shady localities, on limestone rock, at an altitude 
of 5000 feet ; growing in patches, and the thick, close clumps of its broad leaves matted 
| together look like turf, from which the tall slender-stemmed handsome flower-heads 
spring. | 
. Centaurea ($ Місвогоритв) PLUMOSA, Aitch. et Hemsl.,n.sp Herba perennis vel bien- 
nis, erecta, 1-2-pedalis, fere omnino glaberrima, pauciramosa, ramis sulcatis mono- 
