In a help to clarify our understanding of genus Cirsium, I am uploading my collection of Cirsium again.
Flora of British India had recorded following species under Cnicus, now Cirsium: C. arvense, C. argyracanthum, C. involucratum, C.involucratum, C. falconeri, C. eriophoroides, C. griffithii, C. wallichii (with several varieties), C. sinensis.
BSI Flora of India had shifted C. arvense to Breea arvensis, but POWO considers C. arvense as accepted name; C. argyracanthum according to BSI Flora also includes C. wallichii var. wightii, C. involucratum is now C. verutum; C. griffithii of FBI is now C. interpositum; and C. sinensis now C. shansiense,
BSI Flora gives Following Key:
|b. Inner involucral bracts not dilated at tips||2|
|2a. Heads usually ca 2.5 cm across||3|
|b. Heads usually 3.5-7.5 cm across||4|
|b. Leaves ciliate smooth or scaberulous above; heads usually solitary||5. Cirsium shansiense|
|4a. Involucral bracts quite glabrous, none really spinescent, the points of the outennost being merely needle-like; pappus ca 2.5 cm long||4. Cirsium interpositum|
|b. Involucral bracts not quite glabrous, ending usually in spines; pappus ca 1.5 cm long||5|
|b. Corolla usually ca 2.5 cm long||6|
|b. Heads not densley woolly, usually glabrate, solitary or fascicled, inclined||6. Cirsium verutum|
I am uploading C. falconeri to begin with, Characteristic features are tall habit, large drooping mostly solitary heads 6-7.5 cm
across, and long spines on involucre bracts. Photographed from Khillenmarg,
Kashmir, alt. 3100 m, 17-8-2011.
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.