Page 32 - 《广西植物》2020年第10期
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10 期 TRAN Thi Phuong Anh 等: 越南苦苣苔科石蝴蝶属植物随记暨国家级分布新记录 1 4 1 5
Prov.ꎬ Sa Pa Distr.ꎬ Sa Pa Townꎬ 1 km to the E of population ( origin of C. W. Wang 86160 )ꎬ it was
Sa Pa Townꎬ behind Ham Rong Resort areaꎬ tops of common in Malipo population according to the label of
limestone eroded outcropsꎬ around point 22° 19′ 58″ K. M. Feng 13554 paratype. In Vietnamꎬ around 100
Nꎬ 103° 51′08″ Eꎬ at elevation of 1 600 - 1 700 m individuals of a single population of P. sericea in Sa Pa
a. s. l.ꎬ remnants of primary cloud evergreen broad ̄ town were recorded. This population is protected in good
leaved forest. Lithophytic herb on shady limestone condition but usually is disturbed by tourist activities
cliffꎬ flowers blueꎬ occasionalꎬ 6 October 2016ꎬ and possibly is harmful by introduction of cultivated
Averyanov L.ꎬ Nguyen H. T.ꎬ Nguyen K. S.ꎬ Chuong plants in Hàm Rõng flower garden. Applying the
Q. N.ꎬ Maisak T. V.ꎬ CPC 8251 (HN). Geospatial Conservation Assessment Tool ( http:/ /
China. Yunnan Prov.ꎬ Malipo Countyꎬ Tung Tingꎬ geocat.kew.org/ editor)ꎬ the EOO and AOO of P. sericea
limestone hillꎬ in mixed forests on rock moutainꎬ at 2
in both China and Vietnam are less than 5 000 km and
elevation about 1 500 m a. s. l. Herb on nearly vertical 2
20 km respectively. Following the Guidelines for using
mossy shady cliffꎬ 22 November 1947ꎬ K. M. Feng 13554
the IUCN Red List Categories and Criteria version 4.0
(PE)ꎻ Yunnan Prov.ꎬ Malipo Countyꎬ at elevation about
and 13 (IUCNꎬ 2010ꎬ 2017)ꎬ the global conservation
1 000 m a. s. l.ꎬ C. W. Wang 86160 (PE)ꎻ Yunnan
status of P. sericea is considered as data deficient
Prov.ꎬ Pingbian Countyꎬ Ji Mi Tiꎬ at elevation about
( DD ). Because populations of China are poorly
1 700 m a. s. l.ꎬ 15 October 1939ꎬ C. W. Wang & Y.Liu
understood and we believe that some more populations
82482 (PE)ꎻ Yunnan Prov.ꎬ Ma Ga Qiꎬ at elevation
in Hoang Lien range (Lai Châu and Lào Cai provinces)
about 1 600 m a. s. l.ꎬ on rock surfaceꎬ 11 December
and Hà Giang Province are soon found in the futureꎬ
1939ꎬ C. W. Wang 83024 (KUN)ꎻ Yunnan Prov.ꎬ No
especially the high mountains of Sín Mãnꎬ Hoàng Su
detailed location informationꎬ at elevation about 1 000 m
Phìꎬ V i Xuyên and Qu a n Ba districts with similar
a. s. l.ꎬ rock hill on rock creviceꎬ 3 January 1940ꎬ
habitat of Sa Pa Town are geographically closed to
C. W. Wang 86160 (KUN).
Malipo population of Yunnanꎬ China.
Ecology: Petrocosmea sericea grows at wet humus ̄
2.2 Notes on taxonomy and the key of Petrocosmea
soil or crevices of shady limestone cliffsꎬ under thickets
in Vietnam
and subtropical cloudy evergreen broad ̄leaved forestꎬ at
Petrocosmea martinii is similar to P. iodioides
elevation of 1 600-1 700 m a.s.l.
Hemsl. (1899aꎬ pl. 2599) but differs from the latter by
Phenology: Flowering in October.
its 1(or 2) ̄flowered ̄cymes [( vs. (1) 2 - 4 ̄flowered ̄
Distribution: CHINAꎬ SE Yunnanꎬ Malipo Countyꎬ
cymes]ꎬ bracts 1 - 2 mm long ( vs. 2 - 4 mm long)ꎬ
Pingbian Countyꎬ Maguan Countyꎻ VIETNAMꎬ Lào Cai
calyx segements 2.5-3.8 × 0.8-1.5 mm (vs. 5-7 × 1-
Provinceꎬ Sa Pa Districtꎬ Sa Pa Town.
1.2 mm)ꎬ adaxial lip revolute ( vs. flat)ꎬ filaments
Conservation: As yetꎬ only four herbarium
puberulent (vs. glandular ̄puberulent).
collections of this species were recorded from China. The
Petrocosmea sericea is morphologically close to
holotypeꎬ C. W. Wang 82482 ( PE00030842!)ꎬ from
Yunnan Provinceꎬ Pingbian Countyꎬ Ji Mi Tiꎬ two P. minor Hemsl. (1899bꎬ pl. 2600) by leaf shapeꎬ
paratypes (C. W. Wang 83024 and K. M. Feng 13554 number of flower of a cymes however the former can be
collected from Magaqiꎬ China and Tung Tingꎬ Malipo easily distinguished from the later by its leafꎬ petiolesꎬ
Countyꎬ China respectively)ꎬ and one old collection pedunclesꎬ pedicelsꎬ outer calyx surface densely short
C. W. Wang 86160 ( KUN75797!ꎬ PE00155454!) was appressed puberulent ( vs. shaggy long pubescent )ꎬ
collected on 1 March 1940 from Malipo Countyꎬ Yunnan anthers 1 - 1. 5 mm long ( vs. ca. 3 mm long) and
Prov.ꎬ China. Conservation status of these populations is pedicels 8-12 mm long (vs. 14-25 mm long).
poorly understood except the general information of Here we present the further promoted identification
frequency occurrenceꎻ while it was rare in Pingbian key to all known species of Petrocosmea occurring in
population where holotype was collected and Malipo Vietnam.