Cyclocarya serrata (C. K. Schneid.) Y. F. Song, W. N. Bai & D. Y. Zhang, 2025

Cyclocarya serrata (C. K. Schneid.) Y. F. Song, W. N. Bai & D. Y. Zhang comb. nov.

Fig. 5 D – F View Figure 5

≡ Pterocarya serrata C. K. Schneid. View in CoL , Ill. Handb. Laubholzk. ii: 880. 1912. Type. E. H. Wilson 901, Western Hubei: Chien-shih-hsien, flowering in June 1900 ( lectotype: A barcode A 01109592), designated by S. S. Renner & M. S. Dosmann; isolectotypes: A barcode A 01109593, E barcode E 00275520 (annotated as an isotype of P. serrata View in CoL by W. E. Manning in July 1963), K barcode K 004053893, K barcode K 004053899 (annotated as P. paliurus View in CoL by W. E. Manning in July 1962), LE barcode LE 01070443, NY barcode NY 00255120 (annotated as an isotype of P. serrata View in CoL by W. E. Manning in March 1971), NY barcode NY 4358432 (annotated as an isotype as P. paliurus View in CoL by W. E. Manning in March 1971). P barcode P 06842578 (annotated as P. paliurus View in CoL by W. E. Manning in October 1962); Epitype. Fruiting in August 1901, E. H. Wilson 901 (A barcode A 01109592), designated by S. S. Renner & M. S. Dosmann; other Wilson 901 collections from August 1900 are preserved at E (barcode E 00275519), K (barcode K 004053892), P (barcode P 06842583), and NY (barcode NY 04358771); and K has another undated flowering Wilson 901 sheet (barcode K 004053894). Annotation labels for all Wilson 901 collections from both June and August 1900 have been sent to all these herbaria. ( Renner and Dosmann 2025)

= Pterocarya micropaliurus Tsoong View in CoL , Contr. Inst. Bot. Natl. Acad. Peiping 4: 134. 1936. [ Pterocarya Micro-Paliurus View in CoL ]. Type. China. Anhui. Huangshan: 1450 m alt., 21 Aug. 1935, T. N. Liou & P. C. Tsoong ( holotype: PE ( PE 00820927 [image!]); isotype: IBSC ( IBSC 0417705); isotype: WUK ( WUK 0000512 )).

≡ Cyclocarya paliurus var. micropaliurus (Tsoong) P. S. Hsu, X. Z. Feng & L. G. Xu View in CoL , Guihaia 8 (4): 322. 1988.

Description.

Trees to 30 m tall. Leaves 20–25 cm; petiole 2.5–5 cm, tomentose or sometimes glabrescent; rachis tomentose; leaflets 9–13, long-lanceolate to elongated elliptical, apical leaflets 5.3–12.3 × 2.2–5.3 cm, l / w ratio 2.2–3.7; lateral leaflets 6.5–13.8 × 2–4.7 cm, l / w ratio 2.6–4.5; basal leaflets 2.7–9.4 × 1–2.9 cm, l / w ratio 1.8–3.8; base oblique, apex acuminate, margin densely denticulate-serrate; Male flowers 3–4 mm in diameter, with an entire bract; bracteoles 2; sepals 2; stamens 18–20, anthers pubescent. Female flowers subtended by a small, entire bract, adnate to bracteoles and virtually submerged in wing complex; bracteoles 2, united and adnate to ovary; sepals 4, adnate to ovary, free at apex; style short; stigmas commissural, 2 - lobed, plumose. Nutlets compressed globose, ca. 7 mm; disc wing leathery, ovate, 2.5 cm. 2 n = 2 x = 32.

Phenology.

Flowering mid-May – early Jun.; fruiting Aug. – Sep.

Qu et al. (2023) reported diploid individuals from two locations in the Huangshan Mountain Range: Jixi County, Xuancheng ( 30.127003°N, 118.842934°E, 1406 m alt.) and Huangshan ( 30.152409°N, 118.167465°E, 1316 m alt.). Their findings, along with the original collection of Pterocarya micropaliurus at 1450 m in Huangshan ( Tsoong 1936), further support the presence of diploid C. serrata at high elevations.

Distribution and habitat.

Cyclocarya serrata is distributed in the subtropical regions of China, primarily inhabiting broad-leaved forests at elevations above 1300 meters. Its distribution is concentrated from western Hubei (Daba and Wuling Mountains) to eastern Sichuan (Dalou Mountains), with additional occurrences in the Dabie and Huangshan mountain ranges.

Additional specimens examined.

Anhui province • Huangmaojian Shan , 500 m alt. (?), 22 Jun 2006, Liu Miao et al. A 100046 ( KUN barcode 1212700, PE barcode 01800871) • Huang Shan , 23 Sep 1965, H. X. Zhou 775 ( HHBG barcode HZ 001348 , PE barcode 00820919) ; Chongqing municipality • Nanchuan Xian, Jinfo Shan , 1500 m alt., 6 Jul 2004, Z. Y. Liu 2040006 ( IMC barcode IMC 0027823 About IMC ) • 1550 m alt., 14 Jul 1957, J. H. Xiong & Z. L. Liu 92050 ( PE barcode 00821068) ; Hubei province • Shengnongjia , 15 Jul 2017, D. G. Zhang zdg 1816 ( JIU barcode JIU 36484 About JIU ) • Dajiuhu, 1570 m alt., 2 Aug 2016, H. D. Huang & D. Wan 525 ( HIB barcode HIB 0173346 About HIB ) • 1750 m alt., 15 May 2017, H. D. Huang et al. 1406 ( HIB barcode HIB 0189791 About HIB ) • Shiliangou , 1500 m alt., 11 Jul 1976, Shennongjia Expedition 21706 ( PE barcode 00990444) • Xiangshuihe , 1940 m alt., 6 Aug 1976, Shennongjia Botanical Expedition 10986 ( PE barcode 00990443) • Xingdou Shan, Lichuan , 1600 m alt., 1981, G. G. Tang 951 ( IBK barcode IBK 00155757 About IBK ) • Shennongjia Forest District , 1300 m alt., 14 Sep 1980, Sino-Amer. Exped. 1299 ( MO barcode 3507478, PE barcode 00990437) • Dalaoling, Yichang , 25 May 1977, Z. A. Wang et al. 216 ( CCAU barcode ccau 0006964) • 29 May 1977, X. W. Zhou et al. 003 ( CCAU barcode ccau 0006969) ; Hunan province • Shimen Xian , 650 – 700 m alt. (?), 9 May 1980, D. C. Xiao 80275 ( CSFI barcode CSFI 030772 About CSFI ) ; Sichuan province • Leibo , 2174 m alt., 3 Jun 1983, M. Y. Fang 117877 ( PE barcode 02097304) .

Determination Key