GREENMAN, — SPERMATOPHYTES FROM MEXICO, ETC. 243 
inner face; lobes oblong-rotund, spreading: nutlets subcircular, plano- 
convex, 4 to 5 mm. in diameter, glochidiate-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, 0. G. Pringle, no. 8822 
(hb. Gr.). 
The plant here described but for the character of the fruit might well 
be placed under the genus Omphalodes, being in habit and superficial 
characters almost the counterpart of O. 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. FI. 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 (bb. 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 rarely subdentate towards the apex, 
narrowed at the base into a 3 to 5 mm. long petiole, dark green and shining 
above, paler and glandular-punctate beneath with larger circular glands 
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 bieolorous, tubular-fannelform, 
about 4 mm. long, 5-lobed, externally glabrous, densely pubescent in 
the throat; tube white; lobes subrotund, scarcely more than 1 mm. long 
and broad, slightly pubescent on the inner or upper surface, deep purple 
or magenta colored: mature fruit not seen. — Mexico. State of Hi- 
