Article from Bean's Trees and Shrubs Hardy in the British Isles
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'Aster albescens' from the website Trees and Shrubs Online (treesandshrubsonline.
Bean treated this species under the name Microglossa albescens.
A plant with semi-woody, erect stems, growing in tufts about 3 ft high, very pithy, and clothed with a grey down. Leaves alternate, lance-shaped, 2 to 5 in. long, 1⁄2 to 1 in. wide, tapered to both ends, the margins entire or with minute teeth, grey and downy beneath. Flower-heads 1⁄3 in. in diameter, produced during July, in compound corymbs 3 to 6 in. across, terminating the current season’s growth. Ray-florets about fourteen, narrow, pale lilac-blue or bluish white; disk-flowers yellow.
A variable species, which, understood in a wide sense, ranges from the north-west Himalaya to Kansu, up to 12,000 ft; introduced to the Chiswick gardens of the Royal Horticultural Society about 1840. The shoots made during the summer die back considerably during the winter, almost to the ground in severe seasons. The flowers are of a rather indeterminate blue, and the plant has no particular merit except in flowering in late summer. Propagated by cuttings of the young growths in heat, or by dividing old plants.
A plant raised from seeds collected by Beer, Lancaster and Morris in east Nepal in 1971 is figured in Bot. Mag., n.s., t.878.