cies grows, are we not justified in assuming that the seeds 
which produced the type plant were collected in Oaxaca, 
most probably on the high, rain-forested peaks of the 
northeastern mountain chains of that state? 
Since no adequate description of Rhodochiton volubile 
in the wild state has ever been published, the following 
notes may be of interest. My collection of this species 
was made in the dense, cool and luxuriant rain-forest of 
Cerro Malacate at an altitude of 2300 to 2500 meters. 
The plant is a luxuriant vine which twines on the foliage 
of shrubs and low trees in the deeper parts of the forest 
where little direct sunlight penetrates.’ It presents a very 
beautiful and striking appearance. The deep purple co- 
rollas and reddish calyces of the flowers are very notice- 
able against the dark green of the forest shrubbery, and 
together with the brilliant vermillion flowers of H/piden- 
drum vitellinum Lindley,constitute the most conspicuous 
feature in the dense shade of the forests of Cerro Mala- 
cate. Nowhere in the mountains of northeastern Oaxaca, 
however, is Rhodochiton volubile abundant. Although I 
searched for it carefully in other supposedly favorable 
localities in the Districts of Ixtlan, Cuicatlin and Teo- 
titlin, I did not find it except on Cerro Malacate, and 
even there it was restricted to a very limited altitudinal 
range of two hundred meters. 
LITERATURE CITED 
1. Zucearini, J.G.: in Abh. Akad. Muenchen 1 (1832) 306. 
2. Munz, P.A.: The Antirrhinoideae-Antirrhineae of the New World, 
in Proc. Calif. Acad. Sci. ser. 4, 15 (1926) 396. 
3. Zucearini, J.G.: in Abh. Akad. Muenchen 8 (1837) 12. 
1In this connection, it is interesting to note that Lindley (in Ed- 
wards’ Bot. Reg. 8 (1835) t. 1755) very early pointed out to horti- 
culturists in England that the plant’s “‘greatest enemy seems to be 
bright sunlight.’’ 
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