ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS. 331 
and the flowers purplish, but it has the fruit of a trae Raimannia and requires to be 
placed in that genus. 
Raimannia drummondii (Hook.) Rose. 
Oenothera drummondii: Hook. Bot. Mag. 61: p/. 3361. 1835. 
Raimannia grandis (Britton) Rose. 
Ocnothera sinuata grandis Britton, Mem, Torr. Bot. Club 5: 358, 1894. 
Oenothera sinuata grandiflora S. Wats. Proc, Am. Acad. 8: 581, 1873, not O. grandi- 
flora Ait. 1789. 
Oenothera laciniata grandis Britton in Britton & Brown Tllust. Fl. 2: 487. 1897, 
Oenothera laciniata occidentalis Small, Bull. Torr, Bot. Club 28: 173. 1896. 
This western species is very common in the prairie region of eastern Texas. It 
does not seem to grade into the 0. /aciniata of the eastern United States, being easily 
distinguished by its few large flowers, long tips to the calyx-segments, and very long 
stigma lobes, and I have therefore given it specific rank. 
Raimannia heterophylla (Spach) Rose. 
Oenothera heterophylla Spach, Nouy. Ann, Mus, Par, 4: 348. 1855. 
The old Oenothera heterophylla shows considerable variation in the pubescence of 
the calyx and the length and spread of calyx tips as well as in general habit. The few 
Texas specimens which I have seen suggest the possibility of a second species but 
hardly warrant the deseription of one at this time. The species is often confused in 
herbaria with O. rhombipetala, but the latter is easily recognized by the appressed 
pubescence on the calyx. 
O. bifrons Don belongs here. QO. leona Buckley, generally referred to O. heterophylla, 
has a nearly glabrous calyx, and this suggests the possibility of its being a good 
species, but the material in our larger herbaria is still scanty. 
Raimannia humifusa ( Nutt.) Rose. 
Oenothera humifusa Nutt. Gen, 1: 245, 1818. 
Raimannia laciniata (Hill) Rose. 
Oenothera laciniata Hill, Syst. Veg. 12: 64. 1767. 
Raimannia littoralis (Schlecht. ) Rose. 
Ocvenothera littoralis Schlecht. Linniwa 12; 268, 1838. 
To R. littoralis I would refer Pringle’s no. 7678, collected on sandy dunes near 
Tampico, Tamaulipas, April, 1898. Pringle’s plant seems to differ from R. drum- 
mondi, a United States species, in its pubescence and more erect pods. 
A somewhat similar plant, but probably distinct, variously treated as a form of 
O. drummondi and O. sinuata, has been collected on the coast of Lower California. 
Raimannia macrosceles (A. Gray) Rose. 
Oenothera macrosceles A. Gray, Mem. Am. Acad. n. ser, 4: 43, 1849. 
Onagra macrosceles Small, Bull. Torr. Bot. Club 23: 172. 1896. 
The Qenothera macrosceles Gray is certainly not an Onagra as supposed by Small, 
for it has ascending ovules and terete seeds, ete. 
Raimannia rhombipetala ( Nutt.) Rose. 
Oenothera rhombipetala Nutt.; T. & G. FIN. Am, 1: 498, 1840. 
APIACEAE. 
INTRODUCTORY NOTE. 
In 1900 Coulter and Rose published a synopsis of the Mexican and 
Central American Umbelliferae.“ Since then a number of new species 
of Eryngium have been published by Mr. W. Botting Hemsley, while 
« Proc. Washington Acad. Sciences, vol. 1, pp. 111-159, ple. 3-18, 1900. 
