295 



anything like good fruiting condition. On leaving Penonome a trip 

 was made southeast of the canal along the Pacific coast about lOO 

 miles to the Gulf of San Miguel, and up the Tuira river about 70 

 miles into the the interior to the mining camp of Cana. Here 

 much more favorable conditions were found, Cana being situated 

 at an altitude of 2,000 feet above the sea with the Espirito Santo 

 mountains just back of the town, rising 5,000 feet higher. Mosses 

 and liverworts were fairly abundant and at a more favorable season 

 doubtless a large collection might be made. 



" Of the 30 species brought back from both sides of the Canal 

 Zone, five sixths are known to be South American. Two of 

 these, Pilotrichiun amazonum Mitt., collected originally by Spruce 

 on the Amazon, dind Lepidopihnn brevipes Mitt., found by Spruce in 

 the Andes at 3,000 feet, had not been since reported by any other 

 collector. The five remaining species appear to be unknown out- 

 side of Central America. They are Syrrliopodon Bernoullii C. M. ; 

 a species belonging to the very large genus Macromitriwn, appa- 

 rently undescribed ; a species of Cryphaca, also undescribed, and 

 bearing numerous propagula on the stems ; PorotricJmm coban- 

 ense C. M. and Cyclodictyon Liebinanni Schimp., these last two 

 being previously known only from the type localities." 



The second paper, " The Morphology of Taenioina,'' by Miss 

 Elizabeth I. Thompson, was not read, as Miss Thompson was 

 absent. 



Dr. N. L. Britton gave a brief account of RJiipsalis, a genus 

 of the Cactaceae whose members are pendulous from tree trunks 

 or rocks. Most of these plants occur in Tropical America, but 

 a few species, strange to say, are found in tropical east Africa. 

 Of the fifty-three species that have been recognized, the speaker 

 discussed chiefly those of Mexico, Central America, and the 

 West Indies, illustrating his remarks with herbarium specimens. 



Dr. Tracy Hazen described in detail an interesting phase in 

 the development of a species of Chaetophora found in the brook 

 flowing through the herbaceous valley of the New York Botani- 

 cal Garden. This investigation is, however, not yet complete. 

 Dr. Hazen stated incidentally that the algal flora of this brook 

 appeared to be considerably richer now than it was a few years 



