HYDROPHYLLACE, 361 
conspicuously winged margins of the adnate portion of the filament taper upwards, with 
no vestige of a tooth. 
In Nama there is no hypogynous disk ; but the very base of the calyx is obscurely 
adnate to that of the ovary in NV. jamaicense, N. hispidum, &c. It is decidedly so in 
NV. undulatum, and so much so in N. stenocarpum that the ovary and capsule appear 
to be about one third inferior. The union is complete; but the base of the calyx may 
usually be torn away without much rupture. In this species, moreover, is often seen 
the anomaly of more or less united styles. 
In characterizing the Mexican new species it will be both convenient and useful to 
give a synoptical arrangement of all of them now known. 
§ 1. Filamenta inferne bidentata. 
1. Nama schaffneri, A. Gr., n. sp. 
E radice annua ramosissimum, diffusum, molliter pubescens, foliis lingulato-spathulatis vel oblan- 
ceolatis basi subdecurrente sessilibus membranaceis flores breviter graciliterque pedunculatos 
superantibus, corolla (fere semipollicari) infundibuliformi sepalis sursum parum ampliatis 
duplo longiore, appendicibus staminum linearibus paullo brevioribus quam filamentum suum, 
capsula oblonga polysperma, seminibus ovalibus leviusculis, testa conformi diaphana. 
Nort MExico, in low sandy ground near Morales, San Luis Potosi (Schaffner, 194), 
the same region (Parry & Palmer, 609). Hb. Kew. 
The singular appendages to the filament are continued downwards to the base of the 
adnate portion as a narrow linear border. 
2. Nama stenophyllum, A. Gr., n. sp. 
Suffrutescens, hirsuto-hispidum ; caule sat valido foliosissimo ; foliis angusto-linearibus (subpolli- 
caribus vix lineam latis) flores equantibus vel superantibus; corolla fere hypocraterimorpha, 
limbo brevi sepalis sursum haud ampliatis paullo longiore; filamentis brevissime bidentatis ; 
capsula inferne cum calyce longius adnata. 
NortH Mexico, San Lorenzo de Laguno, Coahuila (Palmer, 861), San Luis Potosi 
(Schaffner, 77)? Hb. Kew. 
Fruit not seen, and flowers scanty or in poor condition. In two forms—one very 
hirsute and hispid, with spreading white hairs; the other with more appressed, some- 
what strigose, pubescence, firmer leaves, and more ligneous stems. Appears as if a 
denizen of subsaline soil. The appendages of the stamens are as in the foregoing 
species, except “the termination, where the filament becomes free, with a short callous 
tooth on each side. 
§ 2. Filamenta edentata, basi corolle adnata, sepe dilatata, interdum marginibus liberis 
apice haud excurrentibus plus minus alato-appendiculata. 
* Suffrutescentia, sessilifolia, oligosperma, sepalis sursum attenuatis. 
3. Nama palmeri, A. Gr., n. sp. 
Suffrutescens, cinereo-pubescens et subhirsutum, foliis subspathulato-lanceolatis vel sublinearibus 
basi angustata sessilibus concoloribus fere eveniis (plerumque sesquipollicaribus) flores glome- 
BIOL. CENTR.-AMER., Bot. Vol. II., February 1882. 3a 
