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| Tricyrtis macranthopsis by eol.org |
Synonym: Tricyrtis macrantha subsp. macranthopsis (Masam.) Kitam. or Tricyrtis macrantha var. macranthopsis (Masam.) Okuyama & T.Koyama
Distribution: C. Japan (Kii Pen.) 38 JAP, GPS area 33.73N, 135.38E, Tanabe, Wakayama
Description by Crûg Farm:
Beautiful species from Japan, but is exacting with its demands. Best planted in a raised position, to view the stunning long deep yellow, pendent flowers, which are red spotted internally, carried in the axils of the arching stems from August-November in this variety. Requiring full to part shade, with adequate moisture provided during its growing period, in an acidic to neutral humus rich soil that is well drained. Not surprisingly it is found growing alongside waterfalls in the wild.
To find out more about the original climate of Tricyrtis macranthopsis I looked up climate data of the Tanabe, Wakayama area in Japan. (Data provided by WorldWeatherOnline.com, also with help from climate-data.org)
In Tanabe, the climate is warm and temperate with significant rainfall throughout the year.
Reported min./max. temperatures for the past eight years have been during winter 3°C/7°C and 25°C/33°C for the summer. This concludes to an average annual temperature of 16.8°C in Tanabe. The rainfall there averages 2151mm. Annual humidity varies between 70-90%. This climate is considered to be "Cfa" according to the Köppen-Geiger climate classification. "Cfa" translates to Humid Subtropical Climate. England is classed as "Cfb" Oceanic Climate with average annual temperatures around the 11°C mark and annual precipitation between 650 and 900mm. Despite the subtropical origin of Tricyrtis macranthopsis, it is considered hardy in most of the UK.
Although its original habitat is located in C Japan the climate seems very similar to the Kyushu, Southern Japanese climate we learned about when looking at Tricyrtis ohsumiensis.
In comparison to the description above, this is a snippet of an original publication of Flora of Japan : in English : combined, much revised and extended translation / by the author of his Flora of Japan (1953) and Flora of Japan, Pteridophyta (1957) ; edited by Frederick G. Meyer and Egbert H. Walker. Tricyrtis macranthopsis was first published in 1935 in Trans. Nat. Hist. Soc. Formosa 25: 251 (1935).
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| Flora of Japan (1953) - biodiversitylibrary.org |
Brachycyrtis macranthopsis (Masam.) Honda; T. macrantha var. macranthopsis (Masam.) Okuyama & T. Koyama Kii-Joro-Hototogisu.
Rhizomes short; stems 40-80cm long, reclined above; leaves distichous, narrowly oblong-ovate, 7-17cm long, 2.5-5cm wide, lustrous above, glabrous, gradually acuminate, cordate and clasping with 2 basal auricles or the lower edges placed on each side of the stems, pale green beneath and subglabrous to sparsely hirsute on the nerves; flowers axillary and terminal, solitary to few, pendulous, 3-4cm long, tubular-campanulate, glabrous; tepals oblanceolate, clear yellow, with brownish purple dots inside, the outer ones with a short spur at base, short-mucronate. Aug.-Oct., Mountains; from Honshu (Kii Prov.); rare, Occasionally planted in gardens.
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