Mitracarpus pusillus Steyermark (1978: 36)

Scatigna, André V., Carmo, João A. M. & Simões, André O., 2016, New records of Philcoxia minensis (Plantaginaceae) and Mitracarpus pusillus (Rubiaceae): conservation status assessment and notes on type specimens of two threatened species from the Espinhaço Range, Minas Gerais, Brazil, Phytotaxa 243 (3), pp. 297-300 : 298-299

Mitracarpus pusillus Steyermark (1978: 36) .

Type:— BRAZIL. Minas Gerais:wet campo, Serra do Cabral , summit ca. 8 km W of Joaquim Felício, 1200 m, 7 March 1970, H.S. Irwin et al. 27121 [cited by Steyermark (1978) and Souza et al. (2010) as H.S. Irwin et al. 27120] (holotype UB ; isotypes MO2880038 [digital image] !, NY00132262 [digital image]! , RB00177767 [digital image]! ) [Images of isotypes available at http://www.tropicos.org/ Image /30705, http:// sweetgum.nybg.org/science/vh/specimen_details.php?irn=756649, http://aplicacoes.jbrj.gov.br/jabot/v2/templaterb2. php?colbot=RB&codtestemunho=177767&arquivo=00177767.jpg, respectively]. Fig. 2C–D .

The information “27121 not 27120!” is written on the labels of the isotypes, including those from MO and RB, which we cite here for the first time. The description of the type specimens in Steyermark (1978) matches the morphology of these isotypes; H.S. Irwin et al. 27120 (NY [photo]!) is a specimen of Alternanthera martii Fries (1920: 10) . Mitracarpus pusillus is characterized by its cespitose herbaceous habit with prostrate to decumbent stems, terminal glomerules and circumscissile capsules. It is assessed as Endangered (EN) under the criteria B1ab(iii)+2ab(iii), with EOO = 102.9 km ² and AOO = 16 km ² (.kml file available at http://figshare.com/s/7d283c22772a11e58ef306ec4b8d1f 61). It is known from only two locations and is under continuing decline of suitable habitat due to eucalyptus forestry and agriculture ( Zappi et al. 2014).

Specimens analysed:— BRAZIL. Minas Gerais: Buenópolis, Serra do Cabral , 28 September 1949, M. Magalhães 4560 ( UB!) , Diamantina, Parque Nacional das Sempre Vivas , 17°53’57”S, 43°47’56”W, 6 July 2014, J.A.M. Carmo et al. 223 ( UEC!) , Joaquim Felício, Parque Estadual da Serra do Cabral , 17°42’24”S, 44°11’40”W, 8 July 2014, J.A.M. Carmo et al. 231 ( UEC!) , Serra do Cabral , 17º41’34”S, 44º11’56”W, 30 March 2005, E.B. Souza et al. 1053 ( HUEFS) , estrada para a Várzea da Palma, ca. 16.5 km da ponte do Córrego da Onça , alto da serra, 1146 m, 17°41’57”S, 44°16’15”W, 26 January 2004, J.R. Pirani et al. 5310 ( SPF!, K) .

Figures

FIGURE 2. Philcoxia minensis flower.A. Front view; B. Lateral view.Mitracarpus pusillus inflorescence. C. Front view; D. Lateral view. (Photos: A–B by AVS; C–D by JAMC).