Macbride — Further Notes on the Boraginaceae 17 
supra scrabris subtus dense pubescentibus cum pilis albis brevis- 
simis, petiolis hirsutis 7-10 mm. longis; spicis cylindraceis densis 
a 5 
mixtis; calycibus junioribus globosis dense brevissimis hirsutis; 
corolla alba 4 mm. longa calyce duplo ree parce oer ad 
faucem lobis inequaliter dehdenists. staminibus exsertis. — 
Mexico: near the boundary of Michoacan and Cosas | Aug. 1, 
1898, Langlassé, no. 265 (Typ, Gray Herb.). 
It is with no little hesitation that I propose a plant of this large 
genus as new. However, apparently no member of the subsection 
Spiciformes occurring in Mexico agrees (at least as described) with 
the plant here characterized. In some respects it suggests both 
C. brevispicata Mart. & Gal. and C. ferruginea R. & S. but differs 
from both greatly in pubescence and foliage. 
HELITROPIUM PHYSOCALYCINUM Donn. Sm. Bot. Gaz. xlix. 457 
(1910) has an exact synonym in H. jaliscense Macbr. Proc. Am. 
Acad. li. 542 (1916). The first line of Capt. Smith’s description 
reads ‘‘ Omnibus fere in partibus glanduliferum.”’ This does not 
well apply to the type of H. jaliscense but neither does it to Hyde & 
Lux no. 3990, the latter cited by Capt. Smith as representing his 
species. H. physocalycinum is very distinctive by virtue of its 
unique calyx. Since the original diagnosis was accompanied by 
citations of specimens from Guatemala and Peru only, the follow- 
ing collections showing the distribution of the species in south- 
western Mexico may be named. Mexico: Sierra Madre, Michoa- 
can, June 6, 1898, Langlassé, no. 577; San Sebastian, Jalisco, 
March 16, 1897, EZ. W. Nelson, no. 4083; Talea, Oaxaca, Feb., 
1844, Galeotti. 
OREOCARYA INTERRUPTA Greene, Pitt. iii. 111 (1896). This 
species, not placed in my recent revision of the genus, is represented 
at the Mo. Bot. Gard. by Heller’s no. 9185 from Humboldt Wells, 
Elko Co., Nevada, July 27, 1908. It is apparent that the relation- 
ship of the plant is with O. spiculifera Piper but the tubercles on 
the much smaller nutlets are not at all confluent into rugae. Never- 
theless the habit and vegetative characters simulate O. spiculifera 
rather than any muriculate-fruited species. O. interrupta, there- 
fore, seems to be a connecting link between the rugose and non- 
rugose groups of the small-flowered section of the genus. 
