Eriobotrya × daduheensis H. Z. Zhang ex W. B. Liao, Q. Fan et M. Y. Ding

Ding, Mingyan, Fan, Qiang, Guo, Wei, Shi, Shi & Liao, Wenbo, 2015, Valid publication of the name Eriobotrya × daduheensis (Malinae, Rosaceae), Phytotaxa 212 (1), pp. 95-98 : 97

Eriobotrya × daduheensis H. Z. Zhang ex W. B. Liao, Q. Fan et M. Y. Ding , hybr. nov. ( Fig. 1 )

Species E. japonicae similis , sed laminis supra non rugosis, inflorescentiis brevioribus, 8–12 cm longis (non 10–20 cm), stigmatibus 3 vel 4, raro 5 (non 5), fructibus minoribus, 1.5–3 cm diam. (non 2–5 cm) differt; E. prinoidi similis , sed laminis majoribus, stipulis subulatis (non ovatis), inflorescentiis longioribus, fructibus majoribus differt.

TYPE: — CHINA. Sichuan: Hanyuan County, Dashu Town, Xinmin Village , Mt. Shizishan , in the forest edge at the foot of the mountain, 970 m, 29°17 ′ 48.18 ″ N, 102°39 ′ 44.94 ″ E, 19 December 2007, Q. Fan 9292 (fl., holotype SYS! barcoding number 190936; isotypes SYS! IBSC!) .

Trees 3–8 m tall. Branchlets brownish, tomentose when young, glabrescent. Stipules subulate, 5–12 mm long; petiole 0.5–2.5 cm, brown tomentose; leaf blade elliptic, 10.0–24.0 × 4.5–9.0 cm, leathery, midvein prominent abaxially, lateral veins 9–16 pairs, abaxially densely tomentose, grey or brown, adaxially glabrous, base attenuate, margin serrate, apex acuminate. Inflorescences in terminal panicles, 8.0–12.0 cm long; peduncle and pedicel densely rusty tomentose; bracts subulate, 3–6 mm long, densely rusty tomentose. Flowers fragrant, 1–1.5 cm in diam. Hypanthium cupular, abaxially rusty tomentose. Sepals triangular, 2.5–3 mm long, abaxially rusty tomentose. Petals white, elliptic, 5–7 × 3.5–4.5 mm, apex emarginate. Stamens 20, filaments 3.5–4 mm long, anthers ca. 1 mm long. Ovary densely pubescent, 3–5-loculed, with 2 ovules per locule; styles 3 or 4, rarely 5, 2.5–4 mm, free. Pome yellowish red, globose or nearly globose, 1.5–3.0 cm in diam., gray tomentose, glabrescent; fruiting pedicel 2–6 mm, rusty tomentose. Seeds 1–3.

Phenology: —The hybrid species was found flowering between October and January and fruiting between April to May.

Distribution and Habitat: — Eriobotrya × daduheensis is currently known only from the overlapping regions of E. japonica and E. prinoides , that is, the Daduhe River Basin in Hanyuan County and Shimian County of Sichuan Province, China. This hybrid species usually grows in open forests or forest edges.

Etymology: —The specific epithet refers to the Daduhe River Basin, the locality of the type collection.

Paratypes: — CHINA. Sichuan: Hanyuan county, Dashu town, Xinmin village , Shizishan , 926m, 29°17’48.18 ″ N, 102°39’44.94 ″ E, 19 December 2007, Q. Fan 9287 (fl., SYS) ; Shimian county, Xinmian town, Dongqu village , 955 m, 29°14’27.00 ″ N, 102°24’40.40 ″ E, 21 December 2007, Q. Fan 9388 (fl., SYS) ; Shimian county, Xieluo township, Tianping village , 1135 m, 29°14’57.12 ″ N, 102°14’39.54 ″ E, 22 December 2007, Q. Fan 9396 (fl., SYS) ; Shimian county, Chengbei township, Xiaping villiage, 1095 m, 29°14’36.06 ″ N, 102°19’53.64 ″ E, 22 December 2007, Q. Fan 9417 (fl., SYS) ; the same locality, 22 December 2007, Q. Fan 9421 (fl., SYS) ; Shimian county, Xinmian town, Dongqu village , 955 m, 29°14’27.00 ″ N, 102°24’40.40 ″ E, 20 April, 2008, Q. Fan 9600 (fr., SYS) ; the same locality, 20 April 2008, Q. Fan 9603 (fr., SYS) ; the same locality, 20 April 2008, Q. Fan 9604 (fr., SYS) ; Hanyuan county, Dashu town, Xinmin village , Shizishan , 926m, 29°17’48.18 ″ N, 102°39’44.94 ″ E, 21 April 2008, Q. Fan 9607 (fr., SYS) .

Key: —To distinguish these species of Eriobotrya flowering in autumn and winter (from October to February) in China, an identification key is provided (based on Zhang et al. 1990, Gu & Spongberg 2003).

Figures

FIGURE 1. Eriobotrya × daduheensis H. Z. Zhang ex W. B. Liao, Q. Fan et M. Y. Ding. A. Flowering branch. B. Flower with calyx and bracts. C. Calyx lobes, abaxial view. D. Bracts, adaxial view. E. Flower, in longitudinal section. F. Petal. G. Stamens. H. Style. I. Fruit branch.A–H from Q. Fan 9292 (holotype, SYS); I from Q. Fan 9607 (paratype, SYS). Drawn by Yunxiao Liu.