Twenty-six additional new combinations in the Magnolia (Magnoliaceae) of China and Vietnam
Callaghan, Christopher B.
Png, Siak K.
PhytoKeys
2020
146
1
35
885FC7B5-A2CA-50D0-A86C-41BD71B231A0
(Z. L. Nong) C. B. Callaghan & S. K. Png
Callaghan & Png
2020
Z. L. Nong
Magnoliopsida
Magnoliaceae
Magnolia
CoL
Plantae
Magnolia septipetala
Magnoliales
0
1
Tracheophyta
species
septipetala
comb. nov.
Basionym. Michelia septipetalaZ.L. Nong. In: Guihaia13(3): 220-221, fig. 1 (1993).
Chinese name. 七瓣含笑meaning "seven-petals (tepals) michelia" (the tepals in fact are recorded as 7-9)
Type. CHINA. Jiangxi Province: Xinfeng County, Jinpen Shan, in woods, 21 May 1986, Nong Zhi-lin 086067(holotype: IBK, fl. white n.v.). Other specimens recorded: Same locality? Nong Z.L. 086167. Jiangxi Province: Shangyou County, Wuzhifeng, Guangu Shan, 670 m, 23 November 1976, Nong Z.L. 760347(JXAU online images!). Digital images of specimen 760347with collector noted as Shi Xinghua, accessed 19 March 2019: [JXAU: 0001182]: http://www.cvh.ac.cn/spm/JXAU/JXAU0001182 [JXAU: 0001183]: http://www.cvh.ac.cn/spm/JXAU/JXAU0001183 [JXAU: 0001184]: http://www.cvh.ac.cn/spm/JXAU/JXAU0001184 Michelia fujianensisQ.F. Zheng. In: Xia and Deng (2002: 130) and Xia et al. (2008: 83), both p.p. quoad syn. Michelia septipetalaZ.L. Nong. Michelia caloptilaY.W. Law & Y.F. Wu. In: Sima (2011: 234), p.p. quoad syn. Michelia septipetalaZ.L. Nong.
Note. The holotype specimen of Michelia septipetalacannot be found at IBK (Xu Wei-bin, pers. comm., July 2019). However, M. septipetalacan be easily differentiated from both M. fujianensisand M. caloptila, the 2 species under which it is noted in synonymy above, by the comparison of their morphological and phenological characteristics summarised in Table 8below. Table 8.Differentiating features of Michelia septipetala, M. fujianensisand M. caloptila. Plant feature Michelia septipetalaZ.L. Nong Michelia fujianensisQ.F. Zheng Michelia caloptilaY.W. Law & Y.F. Wu maximum height 28 m (30 m†) to 16 m§ ca. 15 m¶ bark colour greyish-white greyish-brown grey indumentum of buds densely ferrugineus-tomentose densely cinnamon-coloured tomentose brown tomentose indumentum of branchlets densely ferrugineus-tomentose densely cinnamon-coloured tomentose brown tomentose leaf shape oblong-elliptic oblong or narrowly obovate-elliptic narrowly elliptic or elliptic leaf dimensions 8-16 x2.8-5.5 cm 6-11 x2.5-4 cm 9-16 x2.5-5 cm leaf apex / base short acuminate / broadly cuneate acute / rounded acuminate or caudate-acuminate / cuneate leaf indumentum adaxially almost glabrous densely short-tomentose at midrib glabrous leaf indumentum abaxially ferrugineus-pubescent, denser at midrib densely ferrugineus or brownish-yellow appressed sericeous minutely brown tomentose lateral leaf veins 11-13 pairs 8-9 pairs 7-12 pairs petiole length / indumentum 5-7 mm, densely ferrugineus pubescent 10-15 mm, densely cinnamon tomentose 5-10 mm, brown tomentose peduncle indumentum densely ferrugineus-tomentose densely cinnamon-coloured tomentose not known tepal number and shape 7-9: external 3 tepals obovate, internal tepals narrowly obovate 15-16: spathulate-oblong (12-17, outer 3 tepals narrowly obovate, inner tepals obovate, or narrowly ovate§) 6-9: obovate-oblong# stamen number and length ca. 20, 10-15 mm number not known, 4-5.5 mm ca. 35 (photo#), length not known filament length 4-5 mm 1-1.5 mm not known gynoecium length narrowly cylindric, ca. 20 mm cylindric, ca. 5 mm not known gynophore length ca. 8 mm ca. 1 mm not known immature carpels ca. 20, densely yellow-brown sericeous, with 2-3 ovules each carpel pubescent, most aborted not known gynophore in fruit yellow-brown tomentose, 18-25 mm long pilose, 2-2.5 mm long ca. 20 mm long fruit aggregates 7-13 cm long 2-3 cm 4-10 cm long mature carpels sessile, oblong or rounded, 1-1.8 x0.9-1.3 cm with 1-3 seeds obovoid, 1.5-2 cm xca. 1.2 cm with 1 seed broadly ovate or suborbicular, 1-1.8 cm long with 1-4 seeds. flowering period May (-June?) January-February‡ December-January§ not known fruiting period November October-November§ September¶ The differentiating features of Michelia septipetalaare cited from Nong (1993)and Liao and Guo (2010)†; those of Michelia fujianensisfrom Zheng (1981)‡, supplemented by Liu et al. (2004: 260)§, with those of Michelia caloptilafrom Law and Wu (1984)and Liu et al. (2004: 228)¶, who each note the flowers as then unknown, plus Yang et al. (2016: 237)#.