Page 29 - 《广西植物》2020年第10期
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1 4 1 2                                广  西  植  物                                         40 卷
   23°03′41″ Nꎬ 104°50′42″ Eꎬ at elevation 1 200-1 400 m  is easily damaged by deforestation and cultivation of black
   a.s. l. Lithophytic herb on vertical shady cliffꎬ flowers  Cardamom in Tùng Vài comm.ꎬ and collecting firewood in
   bluish purpleꎬ rareꎬ 22 April 2018ꎬ L. Averyanovꎬ  both Tùng Vài and Thanh Vân communes. Applying the
   Nguyen S. K.ꎬ Nguyen T. H.ꎬ Nguyen Q. H.ꎬ Chuong  Geospatial Conservation Assessment Tool ( http:/ /
   Q. N.ꎬ T. Maisak & Le N. D.ꎬ VR 606 (LE).         geocat.kew.org/ editor)ꎬ the EOO and AOO of P. martinii
                                                                              2
       China. Yunnan Prov.ꎬ Luoping Countyꎬ Dabailashanꎬ  in Vietnam are less than 15 km . Following the Guidelines
   limestone hillꎬ under broad ̄leaved evergreen closed forestꎬ  for Using the IUCN Red List Categories and Criteria
   at elevation about 2 400 m a. s. l. Herb on nearly vertical  version 13 ( IUCNꎬ 2017)ꎬ the conservation status of
   mossy shady cliffꎬ 3 June 1990ꎬ Hongshuihekaochadui  P. martinii in Vietnam should be assessed provisionally as
   (Hongshuihe Expedition) 1990 (PE)ꎻ Yunnan Prov.ꎬ  Vulnerable B1+2aꎬb (iiꎬiii)ꎻ D2.
   Funing Countyꎬ Lung ̄ami. rocky cliff and rocky crevicesꎬ  Petrocosmea sericea C. Y. Wu ex H. W. Li in
   at elevation about 1 000 m a. s. l.ꎬ 9 May 1940ꎬ C.  Bull. Bot. Res.ꎬ Harbinꎬ 3(2): 21ꎬ photo. 11. 1983ꎻ
   W. Wang 87130 (PE)ꎻ Yunnan Prov.ꎬ Yanshan Countyꎬ  W. T. Wang in Acta Bot. Yunnan. 7(1): 62. 1985. &
   Teng ̄Lung ̄Shanꎬ rocky slope on rock creviceꎬ at   Fl. Reip. Pop. Sin. 69: 319. 1990ꎻ W. T. Wang et al. in
   elevation about 1 300 m a. s. l.ꎬ 20 September 1939ꎬ  Z. Y. Wu & Ravenꎬ Fl. China 18: 308. 1998.
   C. W. Wang 83605 ( PE)ꎻ Yunnan Prov.ꎬ Yanshan                                              Fig. 2
   Countyꎬ Shui ̄to u ̄dzaiꎬ in wooded valley on rock      Lithophytic rhizomatous perennial herbsꎻ rhizome
   creviceꎬ 16 October 1939ꎬ C. W. Wang 84427 ( PE)ꎻ  very shortꎬ covered by fasciculate stout roots. Leaves all
   Yunnan Prov.ꎬ Yanshan Countyꎬ shin ̄tarngꎬ border of  basalꎬ petiolateꎻ petiole (0.5)1-3(4) cm longꎬ ca. 2
   woods on rock creviceꎬ 18 October 1939ꎬ C. W. Wang  mm in diameterꎬ densely brownish to argenteous white
   84475 (IBSC).                                     appressed pubescentꎻ leaf blade elliptic to obliquely
       Ecology: Petrocosmea martinii are found in shady  ellipticꎬ ovateꎬ narrowly ovate and obovateꎬ (1.2)2-
   cliffs of limestone mountains at elevation range of  6.5 × (0.8) 1.5 - 2.5( - 4.5) cmꎬ brownish white to
   1 000-1 500 m a. s. l.ꎬ under primary evergreen broad ̄  argenteous white appressed puberulent and pubescent on
   leaved and coniferous humid forest and usually    both surfaceꎬ base broadly cuneateꎬ cuneate to nearly
   accompanied with mossesꎬ Begonia cavaleriei H.    roundedꎬ margin nearly entire to repand ̄crenateꎬ apex
   Léveilléꎬ Elatostemma sp.ꎬ Ficus pumila L.ꎬ Carex sp.ꎬ  broadly acuteꎻ lateral veins 3-4 on each sideꎬ abaxially
   Cyrtomium sp.ꎬ Cyrtogonellum sp. and Pteris sp.   conspicuous. Cymes 1 (or 3) ̄floweredꎻ peduncle (2)
       Phenology: Flowering in April.                3.5 - 5. 5 ( 8) cm longꎬ densely brownish yellow to
       Distribution: China (Guizhouꎬ Yunnanꎬ Guangxi)ꎬ  reddish brown appressed puberulentꎻ bracts linearꎬ 2-6
   and new record to VIETNAM (Hà Giang Prov.ꎬ Qu an Ba  mm longꎻ pedicel ( 4 ) 8 - 12 mm long. Calyx
                                            
                                                
   distr.ꎬ Thanh Vân and Tùng Vài comm).             actinomorphicꎬ 5 ̄sect from baseꎻ segments equalꎬ
       Conservation: In Vietnamꎬ so farꎬ two fragmented  linearꎬ 4 - 6 × ca. 1 mmꎬ outside densely brownish
                                            
   small populations of this species discovered in Qu an B a  yellow to reddish brown or ferruginous appressed
                                                
   districtꎻ a single population with less than 100 individuals  puberulentꎬ inside glabrous. Corolla purplish ̄blueꎬ
   located in Thanh Vân commune is around 15 km northeast  outside sparsely puberulentꎬ inside glabrousꎻ tube 3-5
   direction from the biggest population of Tùng Vài  mm longꎻ adaxial lip 4 - 5 mm longꎬ indistinctly 2 ̄
   commune. The Tùng Vài population consists of three  lobedꎬ two lobes are fused nearly their 2/ 3 length and
   subpopulationsꎬ each has a maximum of 500 individuals  each lobe is folded and rolled laterally to form a
   and are isolated from each other by valleys in which local  carinateplicate shape of the adaxial lip that encloses the
   people cultivate black Cardamom. P. martinii in different  styleꎬ lobes triangular ̄ovateꎻ abaxial lip (8)8.5-9.5 mm
   populations grow on humid and shady cliffs of limestone  longꎬ distinctly 3 ̄lobedꎻ lobes broadly ovate to rotundꎬ
   mountainsꎬ but scatters in some small groups and each  3.5-4.0 mm longꎬ apex obtuse to rounded. Stamens 2ꎬ
   group consisting of 10-50 individuals. This kind of habitat  adnate to the corolla tube at the baseꎻ filaments broadly
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