Sorbus harrowiana (Balf. f. & W. W. Smith) Rehd., J. Arnold Arbor. 1(4): 263. 1920.

Li, Meng, Sylvester, Steven P., Wang, Zhang-Pei, Pei, Yi-Da, Gao, Xin-Fen, Zhao, Yuan & Jiang, Wen-Qi, 2020, Re-instatement of Sorbus harrowiana (Rosaceae), based on morphometric analysis, PhytoKeys 166, pp. 29-39 : 29

Sorbus harrowiana (Balf. f. & W. W. Smith) Rehd., J. Arnold Arbor. 1(4): 263. 1920.

≡ Pyrus harrowiana Balf. f. & W.W. Smith, Notes Roy. Bot. Gard. Edinburgh 10 (46): 61-62. 1917.

Type.

China. Yunnan: Western flanks of the Shweli-Salwin Divide (Tenchong County?), 2800 m alt., 15 Aug 1912, George Forrest 9040 (holotype: E (E00072735 [image!]); isotypes: A (A00046014!), E (E00010858 [image!], E00072736 [image!]), K (K000758123 [image!])). Fig. 2B .

Description.

Small trees or shrubs. Stems greyish-brown; bark grey to bronze; branchlets glabrous; winter buds conic, 1.5-2.0 cm long, scales glabrous; apex acute, reddish-brown. Leaves pinnately compound, 15-25 cm long; stipules persistent, suborbicular, 1-2 cm, margin toothed; petiole 2.0-4.0 cm long, glabrous; rachis sparsely tomentose, glabrous when old; leaflets 5-7, at intervals of 1-2.5 cm long, oblong, 10-18 × 2.5-3.5 cm, l/w ratio 3.2-4.6, middle leaflets l/w ratio 3.5-4.5, lateral veins 19-21 pairs, margin slightly revolute and shallowly crenate, base rounded or obliquely cordate, apex rounded, both surfaces glabrous. Inflorescences compound corymbs, 30-200 flowered, 12-20 cm in diam., peduncles sparsely pubescent or glabrous; pedicels 3-6 mm, sparsely pubescent or glabrous; flowers 6-9 mm in diam.; hypanthium abaxially pubescent; sepals triangular, ca. 2.0 mm long, glabrous or somewhat puberulous, apex acute, with serrate along margin; petals creamy white, suborbicular, ca. 4 × 4 mm; stamens ca. 15-25; carpels 3(-4); styles 2-4, 2-4 mm. Infructescences sparsely pubescent or glabrous; pomes creamy-white rarely pink, globose or ovoid-globose, 5-7 mm in diam., sepals persistent erect; seeds brownish, reniform, 1.5-2.0 mm long; 2n = 34.

Phenology.

Flowering May-July; fruiting Sep-Oct.

Distribution and habitat.

Sorbus harrowiana is distributed in China and Myanmar (Fig. 3 ). It grows in broad-leaved forests with an altitudinal range between 2100 and 3300 m. (Fig. 4 ).

Additional specimens examined.

China. Yunnan province: Deqin, Cizhong, 2800 m alt., 8 Oct 1959, K.M. Feng 23997 (KUN, PE); Fugong, Lumadeng Xiang, 3100 m alt., 13 Aug 2005, Gaoligong Shan Biodiversity Survey (G.S.B.S.) 27252 (CAS, GH, KUN); Biluo Mountain, 2800 m alt., 28 May 1982, Qinghai-Tibet Expedition 6939 (KUN, PE); Yaping pass, 2884 m alt., 2 May 2002, G.S.B.S. 20209 (CAS, E, GH, KUN, MO); Yaduo Cun, 2700 m alt., 6 Aug 2005, G.S.B.S. 26500 (CAS, GH, KUN); Shibali, 2700 m alt., 15 Aug 2005, G.S.B.S. 28304 (CAS, GH, KUN); G.S.B.S. 28409 (CAS, GH, KUN); Gongshan, Bingzhongluo, 2530 m alt., 1 Sep 2006, G.S.B.S. 31826 (CAS, E, GH, MO, KUN); 2700 m alt., 25 Jul 1982, Qinghai-Tibet Expedition 7512 (KUN, PE); Zguziluo, 2800-3000 m alt., 25 Jun 1978, Bijiang Expedition 1009 (KUN); Champutung, 3000 m alt., Oct 1935, C.W. Wang 67581 (A, KUN, LBG, NAS, PE, PE, WUK); Dulongjiang, 2700 m alt., 21 May 1991, Dulongjiang Expedition 7022 (KUN); Kongdang, 3030 m alt., 28 Sep 2002, G.S.B.S. 16655 (CAS, E, GH, KUN); Labadi, 2970 m alt., 30 Sep 2002, G.S.B.S. 16792 (CAS, E, GH, KUN); Pula river, 3100 m alt., 3 Oct 2002, G.S.B.S. 16906 (CAS, E, GH, KUN); Fucai, 2780 m alt., 1 Sep 2006, G.S.B.S. 31772 (CAS, E, GH, MO, KUN); Yidongwei, 2530 m alt., 1 Sep 2006, G.S.B.S. 31826 (CAS, E, GH, MO, KUN); Mangzhou Wadi, 3010 m alt., 12 Aug 2006, G.S.B.S. 33217 (CAS, E, G, KUN); Qi-Qi Nature Reserve Station, 3200 m alt., 16 Oct 1996, G.S.B.S. (1996) 7803 (E); Dong Shao Fang, 3100 m alt., 21 Sep 1997, G.S.B.S. (1997) 9495 (E, MO); Danzhu river, 2750 m alt., 1 Jul 2000, H. Li et al. 11855 (CAS, E GH, KUN); Dulong Jiang valley, 2770-3050 m alt., 15 Jul 2000, H. Li et al. 12614 (CAS, E, GH, MO, KUN); Su Ki Tung, 1923, J. Rock 10161 (A); Mt. Kenyichunpo, 10000 ft [3048 m alt.], Jul 1923, J. Rock 22068 (A, E); Cikai, 07 Oct 1940, K.M. Feng 7946 (KUN, PE); East Check Point, 2700 m alt., 22 Jul 1982, K.M. Feng 8226 (KUN, PE); Wangtzang, 2800 m alt., 13 Sep 1938, T.T. Yü 20216 (A, E, KUN, PE); Swangchiang, 13 Jul 1938, T.T. Yü 22088 (A, E, KUN, PE); Lushui, 2800 m alt., 6 Jul 2016, Meng Li et al. GYD0058 (CDBI); Tenchong, Mingguang Xiang, 19 May 2006, 3000-3050 m alt., G.S.B.S. 29157 (CAS, E, GH, KUN); Zizhi Cun, 2750-2850 m alt., 19 May 2006, G.S.B.S. 29224 (CAS, E, GH, MO, KUN); Jiangao Shan, 3020 m alt., 23 May 2006, G.S.B.S. 30546 (CAS, E, GH, MO, KUN); Weixi, 2900 m alt., 13 Oct 1934, H.T. Tsai 59790 (A, IBSC, KUN, P, PE); 2800 m alt., 20 Oct 1934, H.T. Tsai 59902 (A, IBSC, KUN, LBG, PE); Biluo Snow Mountain, 3250 m alt., 11 Jul 1981, PE Hengduan Mountain Collection Team 01402 (PE); Cangjiang river, 3300 m alt., 18 May 1940, K.M. Feng 3965 (KUN, PE); Baimaluo, 3200 m alt., 3 June 1940, K.M. Feng 4429 (KUN, PE); Yanwa, 3600 m alt., 11 May 1960, Kunming Workstation of Institute of Botany 8375 (KUN, PE); Kangpucheda, 3000 m alt., 8 Oct 1956, P.I. Mao 385 (KUN, PE); Magelo, 23 Aug 1956, P.I. Mao 401 (KUN, PE); Bading, 3500 m alt., 11 May 1982, Qinghai-Tibet Expedition 6434 (PE); Yunlong, Nu Shan, 2 Nov. 1993, K.D. Rushforth 2663 (E); Xizang province: Chayu, 10000-11000 ft [3048-3353 m alt.], June 1922, G. Forrest 21806 (A, E, P); Oct. 1922, G. Forrest 22870 (A, E).

Myanmar. Kachin state: Myitkyina, 3050 m alt., 19 Oct 1919, R. Farrer 1403 (E); G. Forrest 24481 (E, PE); Chimili, G. Forrest 26813 (A, E); G. Forrest 27541 (A, E); G. Forrest 29775 (E, PE); Putao, 2800 m alt., 16 May 1953, F. Kingdon-Ward 20921 (E); Tata Bum, 3000 m alt., 19 June 1953, F. Kingdon-Ward 21009 (A, E); Trails above Camp 3, 3000-3140 m alt., 22 Oct 2013, Hponyin Mountains Expedition 206A (E); Adung velly, F. Kingdon-Ward 9568 (A).

Figures

Figure 2. Type pictures of Sorbus insignis (Hook. f.) Hedl. (A barcode K 000758177) and S. harrowiana (Balf. f. & W. W. Smith) Rehd. (B barcode E 00072735).

Figure 3. Distribution of Sorbus insignis and S. harrowiana at county level.

Figure 4. Sorbus harrowiana A growing near the road in mixed forest B growing on a steep forested slope above road C growing on Lithorcarpus like an epiphytic shrub D fruiting branch E pinnately compound-leaves.