Ophiopogon malcolmsonii, O. micranthus, O. brevipes, O. subverticillatus and O. humilis were reduced to O. longifolius. Ophiopogon longifolius occurs in E. India, Myanmar, Thailand, Cambodia, Laos and Vietnam. A form with white-striate leaves is sometimes cultivated in SE. Asia and the southern part of E. Asia, including Vietnam, S. China, and Isl. Okinawa, Japan. Diagnostic characters of O. longifolius were also noted.
Chromosome numbers of Thelypteris angustifrons, T. cystopteroides and T. glanduligera were determined in Japanese plants. T. angustifrons was hexaploid with 2n=162 (x=27) in eight plants from seven localities. A hyperhexaploid plant with 2n=164 was also detected. T. cystopteroides is known to consist of diploid and tetraploid cytotypes based on x=27. In this study, the diploid with 2n=54 was confirmed in one plant. T. glanduligera was tetraploid with 2n=108 (x=27) in 14 plants from 13 localities, though different chromosome numbers had been reported outside Japan. As a result, T. angustifrons (6x) is confirmed to be distinct from the other two species at the level of ploidy.
In the course of my taxonomical work of the family Cannaceae, an economic botanical survey of the edible canna plants (Canna edulis Ker Gawl. and its allies) was carried out to investigate its identity, properties and utilization in south Vietnam. Besides the utilization of cooked rhizomes for their own consumption by local people, starch extracted from rhizomes is used to produce noodle which was sometimes found at the market. In Vietnam, thus, edible canna is of commercial value and can provide an applicable cash income to small and poor villagers. The edible canna plants cultivated in the area covered by the present study were found to be a single species, C. discolor Lindl. A field investigation also suggests that this species does not coincide at all with C. edulis though it has been so identified for a long time.
This report is based on the identification of Brassicaceae collections made from the Kunlun Range (including the Hoh Xil Range) and the Chinese side of the Karakorum Mountains, Central Asia, between 1987 and 1990. Accepted names, important synonyms, distributions, specimens collected, and notes are given to each species found in the region. Erysimum handel-mazzettii A.Polatsckek is newly found from Xinjiang and Tibet. Pegaeophyton scapiflorum (Hook.f. & Thomson) C.Marquand & Airy-Shaw and Braya oxycarpa Hook.f. & Thomson are new to Xinjiang. Lepidium alashanicum H.L. Yang is new to Qinghai. Reports of Sterigmostemum tomentosum (Willd.) M.Bieb. from China are based on misidentification of plants of Oreoloma eglandulosum Botschantsev.