142 PROCEEDINGS OP THE AMERICAN ACADEMY 



inner almost wholly scarious : corolla-lobes 2 lines long, dark-brown 

 in the centre : stamens 4, or none : style very pubescent, short or 

 long-exserted : seeds 2. — In tlie San Rafael Mountains, San Luis 

 Potosi (65^ Schaffner). Mature capsules not seen. 



MiRABiLis Jalapa, Linn. At Guanajuato (Duges) ; 775 Parry 

 & I'almer. 



MiRABiLis LOXGTFLORA, Linn. At Guanajuato (Dnges). 



OxYBAPiius Ckrvantesii, Sweet. In the Siena Madre, south of 

 Saltillo (1111). The specimens are referred by Ilemsley to 0. visco- 

 sus, but they accord fairly with the figure and descriptions, and with 

 cultivated specimens of this species. 1314 Berlandier, 348 and 511 

 Gregg, and 912 Coulter are the same. 



OxYBAPnus GLABRiFOLius, Vahl. At Parras, Coahuila (1112); 

 a small-leaved form. 



OxYBAPHUS AGGREGATUS, Vahl. At the same locality (1113), 

 and in the San Mignelito Mountains, San Luis Potosi (177 Schafif- 

 ner) ; 768 Parry & Palmer. 



OxYBAPHUS ANGusTiFOLius, Sweet. Near San Miguel (179 

 Schaffner) ; 767 Parry & Palmer. 



Nyctaginea capitata, Chois. At Laredo, Texas (1114). 



Allionia incarnata, Linn. At San Luis Potosi (175 Schaffner). 



BoERiiAAViA Palmeri. Annual ; stems ascending from a pro- 

 cumbent base, sparingly branched, rough-puberulent and viscid : leaves 

 ovate, obtuse or acute, truncate at base, |- inch long, on short petioles : 

 flowers shortly pedicellate in few-flowered cymes ; bracts small : peri- 

 anth spreading, 3 or 4 lines long, light pink : filaments exserted : fruit 

 oblong-clavate, obtuse, glabrous, Ih lines long, obtusely angled, chan- 

 nelled on the sides. — Allied to B. linearifoUa. At Saltillo (1120). 



Boerhaavia linearifolta, Gray. Leaves from linear to lanceo- 

 late. In the Sierra Madre, south of Saltillo (1121), and in the mount- 

 ains northeast of Monclova, Coahuila (1122). 



Boerhaavta erecta, Linn. At Monclova (1123). 



BoERriAAViA ERiosoLENA, Gray. At San Lorenzo de Lagunn, 

 Coahuila (1124). 



Boerhaavia viscosa, Lag. & Hodr. At San Luis Potosi (176 

 Schaffner). 



Boerhaavia gibbosa, Pavnn. {Senkenbergia annulaf.a, Schauer.) 

 At San Lorenzo de Luguna, Coahuila (1125) ; 771 Parry & Palmer. 

 Considering the diversities in the inflorescence, fruit and foliage, which 

 occur in the other species of Boerhaavia^ there seems to be too little 

 reason for separating the genus Senkenbergia^ especially if it be made 



