256 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
leviter reticulatis costis lateralibus 2-jugis jugo uno basi folii arcte 
approximato altero plus minusve remoto; capitulis numerosis sessili- 
bus in ramulis puberulis paniculae densae thyrsoideae brevibus, 
involucri squamulis anguste oblongis apice tenuibus et leviter 
dilatatis obtusiusculis subglabris 5-6 mm. longis; tubo corollae 
faucibus late campanulatis parum aequante, limbo breviter 5-dentato 
suberecto; achaeniis prismaticis glabris 4 mm. longis corollae longi- 
tudine superantibus— Cuesta de los Borucas, January, 1897, #. 
Pittier, no. 10,540. 
+ + Achaenium corolla multo brevius. 
6. ML Tonduzii, spec. nov. Subglabrata, ramis teretibus fistulo- 
sis, internodiis longis; foliis ovatis integris cordatis acuminatis 
crassiusculis 14 cm. longis, 9 cm. latis supra glabris lucidis in 
specimine siccato ruguloso-reticulatis subtus pallidioribus tenuiter 
pubescentibus conspicue reticulatis a basi 7-costatis, petiolis flexuosis 
verisimiliter prehensilibus; paniculis ovoideis vel subcylindricis 
densis thyrsoideis 8-12 em. longis 7 cm. diametro pedunculo 
crasso subaequilongis, capitulis in apicibus ramulorum pubescep- 
tium sessilibus et glomerulas subcongestas formantibus, involucri 
squamulis oblongis ext griseo-tomentosis apice obtusissimis rotunda- 
tis 3 mm. longis; corolla glabra tubulosa 5 mm. longa sensim 
leviterque ampliata sine faucibus evidentibus, limbo breviter dentato 
erecto; achaenio glabro olivaceo columnari 2 mm, longo, pappi setis 
fuscescentibus corollae fere aequantibus.—In woods, Tucurrique, 
February, 1899, alt. 635 m., Ad. Tonduz, no. 13,274. . 
M. Gozosa, Coult., Bot. gaz. xx, 46 (1895) ( Willugbaeya 
globosa, Coult., J. c.), is a species habitally similar found in Guate- 
mala. It differs in the structure of the involucre and in having 
the leaves rounded, not cordate at the base. It may well occur 
also in Costa Rica. 
7. M. puncrara, Klatt, Bull. soc. bot. Belg., xxxi, pt. 1, 195 
(1892); Robinson & Greenman, J. ¢., 13. Corolla in fauces ampli- 
atas et tubum gracile proprius evidenter differentiata; foliis late 
ovatis cordatis cum lobis vel angulis salientibus duabus lateralibus 
acuminatis. — Clearings of General, alt. 600 m., H, Pittier, no. 3434; 
on the banks of a small stream, Buenos Aires (Costa Rica), H. Pit- 
tier, no. 4934; woods, Shirores (Talamanca), alt. about 100 m., Ad. 
Tonduz, no. 9312; Boca de Zhorquin, Ad. Tonduz, no. 8524; also 
near Chicharras, alt. 2700 m., £. W. Nelson, no. 3805. 
