New YOKK 



UOTAINICAI. 



OAkUEN 



PLANTAE MEXICANAE PURPUSIANAE, XII 



BY 



TOWNSHEND S. BRANDEGEE 



The collection from which these species are described was made by 

 Dr. Purpus in 1923 in the states of Vera Cruz and Chiapas. The 

 number of rare species and those belonging to other regions found in 

 Mexico make this a very interesting collection. The locality printed 

 in a former publication, No. XI, as Remulatero is an error and should 

 have been Remudadero. I am under obligations to Dr. B. L. Robinson 

 and Mr. I. M. Johnston, of the Gray Herbariiun, for the comparison 

 and determination of difficult species. Dr. A. S. Hitchcock, Mr. W. 

 M. Maxon, Dr. S. F. Blake, and Dr. J. N. Rose also have obligingly 

 identified many species belonging to orders or genera in which they 

 are interested. 



Callisia parvula sp. nov. 



Caules ca. 2 cm. alti, ramosi, foliosi : f oliis oblongo-lanceolatis 

 usque 5 cm. longis, 5 mm. latis, margine prope basin hirtis, paulo 

 ciliatis : pedunculis ramos terminantibus, 2-4 cm. longis, glabris, 

 1-3-floris ; sepalis 3 ovato-acutis, 2 mm. longis ; petalis 3 dilute pur- 

 pureis sepala paulo superantibus, flabellatis; staminibus 2 filamentis 

 dense barbatis, autheris oblongis, loculis contiguis; capsulis loculicide 

 3-valvis loculis 2-spermis, ellipsoideis, acutis ; seminibus rugosis. 



This is a small plant having grass-like leaves and growing in moist 

 localities. Collected near Jalisco, Chiapas. No, 9202. Type, Herb. 

 Univ. Calif. No. 220504. 



Echeandia Purpusii sp. nov. 



Glabra : foliis graminiformibus usque ad 15 cm. longis, 3 mm. latis, 

 striatis; radicibus plerumque crassis: scapo ca. 25 cm. alto simplici 

 vel parum ramoso : floribus ad quamque bracteam singulis ; perianthii 

 segmentis exterioribus lanceolatis 3-nerviis, ca. 5 mm. longis ; interior- 

 ibus latioribus albis ; antheris connatis 5 mm. longis quam filamentis 

 laevibus duplo longioribus; stylo hand exserto; pedicellis 6 mm. 

 •cj- longis paulo infra medium articulatis : capsula 5 mm. longa. 



52 Collected on rocky slopes near Hacienda Monserrate, Chiapas. 



,^ No. 9155. Type, Herb. Univ. Calif. No. 220399. 



CD 



