04 BOTANICAL GAZETTE [AUGUST 
in one plane. However, the whole plant is essentially a single 
isolateral system. 
D. opuntioides as observed in Jamaica occurs in well lighted 
positions at elevations of 2000-5500 ft. above sea-level. It was 
found most frequently on the following named plants: Oreopanax 
Pa 
aed 
late aa 
— i > 

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Fic. 1.—Dendro phthora opuntioides: h, branch of host 
ie Decne. and Planch., Rh ytidophyllum tomentosum Matt., 
Baccharis scoparia Sw., Heterotrichum patens DC., and Byrsonima sp. 
Dendrophthora gracile 
Dendrophthora gracile Eich. is dark yellowish green in color and 
Is quite similar in appearance and mode of branching to D. 
opuntioides. The branches, however, are often almost terete, and 
the tendency toward an isolateral arrangement of the branches is 
less prominent than in D. opuntioides. The flowers may be 
