2024年4月13日发(作者：刘飞星)
Phytotaxa 131 (1): 49
–
52 (2013)
/
phytotaxa
/
Copyright © 2013 Magnolia Press
Correspondence
/10.11646/phytotaxa.131.1.9
PHYTOTAXA
ISSN 1179-3155 (print edition)
ISSN
1179-3163
(online edition)
Primula mianyangensis (Primulaceae), a new species from Sichuan, China
XING WU
1,2
, YUAN XU
1
, CHI-MING HU
2
& GANG HAO
1,3
1
2
College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
3
Author for correspondence. E-mail: haogang@
Abstract
A new species assigned to Primula section Aleuritia Duby is described and illustrated under the name P. mianyangensis
& . The new species resembles P. socialis Chen & in lacking a scape and having farinose leaves,
but differs by its much taller stature, long-petioled leaves and larger flowers.
Key words: Section Aleuritia, primrose, southwestern China
Introduction
Primula L. (1753: 142), comprising more than 500 species, is the largest genus of Primulaceae (Hu & Kelso
1996, Richards 2002, Mast et al. 2006). The genus is mainly distributed in the North Temperate zone, with
only a few outliers in the mountainous regions of Africa, tropical Asia, and South America. The modern
centre of diversity is in West China, with approximately 300 species, most of which occur in western Sichuan,
eastern Xizang, and northwestern Yunnan (Hu 1994, Hu & Kelso 1996).
In the past twenty years large-scale molecular phylogenetic analyses on the genus Primula have been
carried out (Mast et al. 2001, Trift et al. 2002, Mast et al. 2006, Yan et al. 2010). Concomitantly, a series of
field expeditions have been undertaken in various parts of China to collect samples for such molecular
phylogenetic studies, and in the course of naming the voucher specimens, a new species was discovered and is
described here.
According to the classification system of the genus established by Smith et al. (1941–1949) and modified
by Hu (1990), the new species, named here as Primula mianyangensis & , obviously belongs
to Primula sect. Aleuritia Duby (1844: 41). Superficially it resembles P. kialensis Franchet (1895: 450), but
differs from the latter by lacking a scape, with flowers solitary arising from the leaf-rosette. It is more closely
related to P. socialis & in Hu (1990: 209), both characterized by having solitary flowers
arising from the leaf-rosette, without a scape, but can be distinguished from P. socialis by its larger stature,
long-petioled leaves and the larger flowers. Primula socialis occurs in Yunnan, Tengchong Xian, about 870
km west of the site of the new species and in a similar habitat.
Primula mianyangensis & , sp. nov. (Fig. 1)
Type:⎯CHINA. Sichuan: Mianyang City, An Xian , Cha Ping Xiang, summit of Qian Fo Shan, 31° 74' N, 104° 21' E,
2750 m elev., 20 June 2012, Y. Xu 120112 (
holotype: IBSC; isotype: IBSC
).
Species affinis P. kialensi Franch. et P. sociali Chen & C. M. Hu sectionis Aleuritiae Duby, a priore imprimis scapo
nullo, foliis longe petiolatis differt; ab altera statura majore, pedicellis ad 5 cm longis, floribus multo maioribus
valde diversa.
Accepted by Tim Utteridge: 22 Aug. 2013; published: 13 Sept. 2013
49
FIGURE 1. Primula mianyangensis. A. the plant; B. calyx (opened); C. corolla dissected to show stamens and pistil (short-styled
flower); D. capsule. A−D drawn from Y. Xu 120112. Drawing by Liu Yun-Xiao.
Herbs, perennial, 5
−
8 cm tall, with a short rootstock covered with the remains of old leaves. Leaves variable,
inner leaves smaller, leaf blade obovate to oblanceolate, 0.8
−
1.8 cm long, pale yellow farinose on both
surfaces, obscurely toothed above the middle, base gradually tapering into a winged petiole usually as long as
the blade; outer leaves long petiolate, petioles 3
−
4.5 cm long, ca. 2 times the length of the leaf blade, not
winged; leaf blade elliptic, 1.5
−
3 × 0.6
−
13 cm, membranous when dry, apex obtuse to more or less acute, base
50
•
Phytotaxa 131 (1) © 2013 Magnolia PressWU ET AL.
2024年4月13日发(作者：刘飞星)
Phytotaxa 131 (1): 49
–
52 (2013)
/
phytotaxa
/
Copyright © 2013 Magnolia Press
Correspondence
/10.11646/phytotaxa.131.1.9
PHYTOTAXA
ISSN 1179-3155 (print edition)
ISSN
1179-3163
(online edition)
Primula mianyangensis (Primulaceae), a new species from Sichuan, China
XING WU
1,2
, YUAN XU
1
, CHI-MING HU
2
& GANG HAO
1,3
1
2
College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
3
Author for correspondence. E-mail: haogang@
Abstract
A new species assigned to Primula section Aleuritia Duby is described and illustrated under the name P. mianyangensis
& . The new species resembles P. socialis Chen & in lacking a scape and having farinose leaves,
but differs by its much taller stature, long-petioled leaves and larger flowers.
Key words: Section Aleuritia, primrose, southwestern China
Introduction
Primula L. (1753: 142), comprising more than 500 species, is the largest genus of Primulaceae (Hu & Kelso
1996, Richards 2002, Mast et al. 2006). The genus is mainly distributed in the North Temperate zone, with
only a few outliers in the mountainous regions of Africa, tropical Asia, and South America. The modern
centre of diversity is in West China, with approximately 300 species, most of which occur in western Sichuan,
eastern Xizang, and northwestern Yunnan (Hu 1994, Hu & Kelso 1996).
In the past twenty years large-scale molecular phylogenetic analyses on the genus Primula have been
carried out (Mast et al. 2001, Trift et al. 2002, Mast et al. 2006, Yan et al. 2010). Concomitantly, a series of
field expeditions have been undertaken in various parts of China to collect samples for such molecular
phylogenetic studies, and in the course of naming the voucher specimens, a new species was discovered and is
described here.
According to the classification system of the genus established by Smith et al. (1941–1949) and modified
by Hu (1990), the new species, named here as Primula mianyangensis & , obviously belongs
to Primula sect. Aleuritia Duby (1844: 41). Superficially it resembles P. kialensis Franchet (1895: 450), but
differs from the latter by lacking a scape, with flowers solitary arising from the leaf-rosette. It is more closely
related to P. socialis & in Hu (1990: 209), both characterized by having solitary flowers
arising from the leaf-rosette, without a scape, but can be distinguished from P. socialis by its larger stature,
long-petioled leaves and the larger flowers. Primula socialis occurs in Yunnan, Tengchong Xian, about 870
km west of the site of the new species and in a similar habitat.
Primula mianyangensis & , sp. nov. (Fig. 1)
Type:⎯CHINA. Sichuan: Mianyang City, An Xian , Cha Ping Xiang, summit of Qian Fo Shan, 31° 74' N, 104° 21' E,
2750 m elev., 20 June 2012, Y. Xu 120112 (
holotype: IBSC; isotype: IBSC
).
Species affinis P. kialensi Franch. et P. sociali Chen & C. M. Hu sectionis Aleuritiae Duby, a priore imprimis scapo
nullo, foliis longe petiolatis differt; ab altera statura majore, pedicellis ad 5 cm longis, floribus multo maioribus
valde diversa.
Accepted by Tim Utteridge: 22 Aug. 2013; published: 13 Sept. 2013
49
FIGURE 1. Primula mianyangensis. A. the plant; B. calyx (opened); C. corolla dissected to show stamens and pistil (short-styled
flower); D. capsule. A−D drawn from Y. Xu 120112. Drawing by Liu Yun-Xiao.
Herbs, perennial, 5
−
8 cm tall, with a short rootstock covered with the remains of old leaves. Leaves variable,
inner leaves smaller, leaf blade obovate to oblanceolate, 0.8
−
1.8 cm long, pale yellow farinose on both
surfaces, obscurely toothed above the middle, base gradually tapering into a winged petiole usually as long as
the blade; outer leaves long petiolate, petioles 3
−
4.5 cm long, ca. 2 times the length of the leaf blade, not
winged; leaf blade elliptic, 1.5
−
3 × 0.6
−
13 cm, membranous when dry, apex obtuse to more or less acute, base
50
•
Phytotaxa 131 (1) © 2013 Magnolia PressWU ET AL.