Twenty-six additional new combinations in the Magnolia (Magnoliaceae) of China and Vietnam
Callaghan, Christopher B.
Png, Siak K.
PhytoKeys
2020
146
1
35
42M9Y
9F7555EE-8C9E-522C-A75C-20539022D6ED
(Dandy) C. B. Callaghan & S. K. Png
Callaghan & Png
2020
Dandy
Magnoliopsida
Magnoliaceae
Magnolia
CoL
Plantae
Magnolia fallax
Magnoliales
0
1
Tracheophyta
species
fallax
comb. nov.
Basionym. Michelia fallaxDandy. In: Notes, Roy. Bot. Gard. Edinburgh 16(77): 130 (1928c). Chinese names: 灰绒含笑meaning "grey-velvet michelia", referring to the grey indumentum covering branchlets, buds, etc. Also: 大叶含笑meaning "large-leaved michelia"
Type. CHINA. Hunan Province: near Wukang-chow (=Wugang), Yunshan, ca. 950 m, in lofty shady forests, 12 July 1918, Handel-Mazzetti 12281p.p. quoad fruiting specimen (holotype: WU online image!; isotypes: A online image!, K online image!). Digital images of holotype and isotype specimens below accessed 19 March 2019: holotype [WU: 0039581]: http://herbarium.univie.ac.at/database/detail.php?ID=70940 isotype [A: 00039058]: https://s3.amazonaws.com/huhwebimages/6C9726D2157D489/type/full/39058.jpg isotype [K: K000681458]: http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000681458 Michelia cavalerieiFinet & Gagnep. In: Chen and Nooteboom (1993: 1058), Frodin and Govaerts (1996: 55), Wu and Chen (2006: 56), Sima and Lu (2009: 50), Sima (2011: 214), Deng and Yang (2015: 148), each p.p. quoad syn. Michelia fallaxDandy. Michelia cavaleriei Finet & Gagnep. var. cavaleriei. In: Xia et al. (2008: 84), p.p. quoad syn. Michelia fallaxDandy.
Note 1. James E. Dandy (1928c: 130), provides background information concerning the division of the fruiting and flowering collections made under number 12281by Handel-Mazzetti on 12 July 1918 and by his servant Wang Te-hui in April 1919 respectively. From his study of these collections, Dandy came to the realisation that they represented two distinct species, retaining Handel-Mazzetti'sname Michelia platypetalafor Wang'sflowering material and publishing the name Michelia fallaxfor Handel-Mazzetti'sfruiting material.
Note 2. An undated identification label in the name of J.E. Dandy, affixed to the Kew Herbarium isotype specimen of M. fallax, indicates his subsequent determination of it as M. cavalerieiFinet & Gagnep. This specimen and the other above seen type specimens are all ca. 20 cm in length and 6 cm wide, roughly only about two-thirds of Dandy'soriginal description of the leaves of M. fallaxbeing "usque ad ca. 30 cm longa et 8.5 cm lata" (up to about 30 cm long and 8.5 cm wide). Dandy'sdimensions are not a misprint, since there are a number of M. fallaxspecimens of different provenances (and provinces) posted to the Chinese Virtual Herbarium (CVH) website with leaves approaching this size, which is alluded to in one of this species two Chinese names translating as "large-leaved michelia". The above noted dimensions must be presumed to be those of the other specimen noted in Dandy'sdescription, the undated specimen Dalziel s.n., collected at about 900 m near Thai-yong, 97 km west of Swatow (Shantou) on Guangdong'snortheastern coast, sometime between 1895 and 1902 (this specimen was not located for the current research).
Note 3. Subsequent to Dandy, M. fallaxhas been listed as a synonym of M. cavalerieiand of M. cavaleriei var. cavalerieiby the authors cited in the section preceding Note 1. However, the present authors consider that while these two species are superficially similar in the shape of their leaves, that the known comparative features recorded in Table 2below distinguish Michelia fallaxas an independent species. Also, it does not key out with the original validating descriptions for Michelia hunanensisor M. xinningiawith which it shares synonymy under M. cavaleriei var. cavalerieiin Flora of China. Therefore, consistent with the past reduction to Magnoliaof the remaining segregate genera of subfamily Magnolioideae, Michelia fallaxis here transferred to Magnolia. Table 2.Differentiating features of the species Michelia fallaxand Michelia cavaleriei. Plant feature Michelia fallaxDandy Michelia cavalerieiFinet & Gagnep. indumentum of branchlets appressed grey tomentose, becoming tawny near apex silver-grey or rufous appressed pilose§ indumentum of buds appressed shiny grey tomentose silver-grey or rufous appressed pilose§ leaf shape elliptic-oblong, oblong or narrowly oblong narrowly oblanceolate-oblong or narrowly oblong§ leaf apex acuminate or subacuminate acuminate or short-acute§ leaf base obtuse or sub-rounded cuneate or broadly cuneate§ leaf dimensions up to ca. 30 x8.5 cm (ca. 29 x9 cm†) 10-20 x3.5-6.5 cm§ leaf indumentum abaxially short appressed grey pubescent glaucous, silver-grey or rufous appressed pilose when young§ secondary lateral leaf veins ca. 14-16 pairs 11-15 pairs‡ petiole length and indumentum ca. 2.5 cm, initially appressed grey or yellow-brown tomentose, later glabrescent 2 cm, puberulus (0.7-1.5 cm# silver-grey or rufous appressed pilose§) gynoecium indumentum appressed grey tomentellous glabrous except for few bristly hairs towards apex of carpels†† number of ovules ca. 10 2 fruiting peduncle indumentum appressed glossy grey or yellowish-brown tomentose silver-grey or rufous appressed pilose§ fruit aggregate length 10-12 cm 5-10 cm§ mature carpels length up to ca. 2.5 cm 1.5-2 cm‡ fruiting period July September-October‡,§ The differentiating features of Michelia fallax, whose flower is unknown, are cited from Dandy (1928c)and CVH (2017)†; those of M. cavalerieifrom Finet & Gagnepain (1906), Law et al. (1996: 184)‡, Liu et al. (2004: 229)§ and Yang et al. (2016: 239)#, plus Dandy (1928c: 130)††.