GREENMAN. — SPERMATOPHYTES FROM MEXICO, ETC. 243 



inner face ; lobes oblong-rotund, spreading : nutlets subcircular, plano- 

 convex, 4 to 5 mm. in diameter, glocbidiate-spinose over the entire 

 upper surface, espinose beneath, minutely strigillose on both surfaces. — 

 Mexico. State of Puebla: under wet cliffs in the barranca below- 

 Honey Station, altitude 1525 m., 24 May, 1904, C. G. Pringle, no. 8822 

 (hb. Gr.). 



The plant here described but for the character of the fruit mio-ht well 

 be placed under the genus Omphalodes, being in habit and superficial 

 characters almost the counterpart of 0. acuminata, Rob. The fruit, 

 however, bears a striking contrast to the saucer-like nutlet of Omphalodes. 

 It is on the other hand more like that of Cynoglossum, but is more dis- 

 tinctly discoid, and bears the glochidiate spines on the upper side only. 

 The trailing habit, moreover, is quite unlike anything known in Cyno- 

 glossum. On the whole it seems best to characterize the plant in question 

 as a new genus based on the technical characters of its fruit and its 

 habit, occupying a position in the order somewhat intermediate between 

 Omphalodes and Cynoglossum. 



Myosotis palustris, Lam. Fl. Fr. ii. 283 (1778). To this species 

 the following specimens are to be referred : Mexico. State of Hidalgo : 

 near Trinidad, 25 November, 1903, C. G. Pringle, no. 11,882 (hb. Gr.) ; 

 in shallow water along river ledges below Trinidad Iron Works, altitude 

 1700 m., 14 June, 1904, no. 8933 (hb. Gr.). The species seems not to 

 have been recorded hitherto from Mexico. 



Citharexylon Pringlei, n. sp. Shrub, 3 to 5 m. high, glabrous 

 throughout : stem and branches covered with a grayish bark ; branchlets 

 somewhat flattened at the nodes : leaves short-petiolate, elliptic-lanceolate 

 to lanceolate, 2.5 to 8 cm. long, 1 to 2.5 cm. broad, merely obtuse or 

 short-acuminate and obtuse, entire or rarelv subdentate towards the apex, 

 narrowed at the base into a 3 to 5 mm. long petiole, dark green and shinino- 

 above, paler and glandular-punctate beneath with larger circular Hands 

 scattered over the entire under surface : inflorescence terminating the 

 stem and branches in elongated arcuate-recurved more or less secund 

 racemes; bracts subulate, nearly or quite equalling the pedicels, 1 to 

 2 mm. in length : calyx cupulate, about 3 mm. high, 5-angled in cross 

 section, sinuately 5-denticulate, slightly pubescent about the orifice on 

 the inner surface, often purplish : corolla bicolorous, tubular-funnelform, 

 about 4 mm. long, 5-lobed, externally glabrous, densely pubescent in 

 the throat; tube white; lobes subrotund, scarcely more than 1 mm. lon<* 

 and broad, slightly pubescent on the inner or upper surface, deep purple 

 or magenta colored : mature fruit not seen. — Mexico. State of Hi- 



