200 SUMMARY OF GURKENT RESEARCHES RELATING TO 



H. nigricmis lias never been collected in Jamaica. It is conspecific with 

 Alsophila decussata Christ. It is obvious that the name Hemitelia multi- 

 flora must stand, and the other names must become synonyms ; also 

 that J. E. Smith's error in recording the original as from Jamaica has 

 confused the identity of the plant. 



Psomiocarpa, a Neglected Genus.* — H. Christ re-establishes 

 Psomiocarpa, a long discredited genus which was created by C. B. Presl 

 in 1849 for an extraordinary Philippine fern collected by Cuming and 

 named Polyhotrya aplifolia by J. Smith. The other members of the 

 genus are the Cuban P. aspidioides Griseb. (1868) and Psomiocarpa 

 Maxoni, a new Jamaican species. Diagnoses of the genus and species 

 are given. Psomiocarpa is related rather to Dryopteris than to Polyhotrya. 

 It has a short sub-erect tufted rhizome, and sporangia that cover the 

 fertile segments all round, and not simply on the lower surface. The 

 sterile fronds are several, fasciculato-rosulately disposed ; the fertile 

 frond is solitary and central. 



Botrychium at Chamonix.t — L. de Vergnes publishes two notes on 

 species of Botrychium found at Chamonix. He gathered B. lanceolaium 

 Aongstr., but now finds that it had already been collected there by 

 V. Payot, who confounded it with B. matricariifolium A. Br. Payot 

 also distributed 5. simplex under the name B. ReuteriVajot. B. Lunaria 

 Sw. and B. rutifolium A. Br. also occur at Chamonix. 



Hymenophyllum in France.^ — P. Harlot shows that the first record 

 of the occurrence of Hymenophyllum timbridgense in the Basses-Pyrenees 

 is to be found in a letter by Bory de Saint-Vincent in 1817, in whose 

 herbarium is a specimen collected by Thore at Cambo in 1808. Roussel 

 in 1796 found the species in Normandy, and De Candolle in 1805 in 

 Brittany. Bory's letters show that he was the first to find Ophioglossum 

 vulgatum var. ambiguum in France. 



Fern-flora of Frankfort. §— J. Mliller-Knatz gives an enumeration 

 of all the ferns that occur in the environs of Frankfort, with all their 

 forms, subforms, monstrous forms, and hybrids. The paper is post- 

 humous, the author having died in May 1909. His fern-herbarium he 

 bequeathed to the Senckenberg Natural History Society. 



North American Ferns. — L. S. Hopkins |1 publishes some notes on 

 the species of Botrychium, in which he points out their tendency to grow 

 in groups. This is probably due to their demand for rather special 

 ecological conditions, and to the requirements of several species being 

 very much alike. H. W. Merrill If writes on the various forms of Poly- 

 podium vulgare which he has succeeded in finding in Maine. R. C. 

 Benedict ** gives a brief resume, under the title " Fern Leaves, Ferns, 



* Smithsouiau Misc. Coll. Washington, Ivi. No. 23 (1911) 3 pp. (1 pi. and fig.). 

 t Bull. Soc. Bot. Prance, Ivii. (1910) pp. 464-5; Iviii. (1911) pp. 222-4. 

 X Bull. Soc. Bot. France, Ivii. (1911) pp. xv-xix. 

 § Abh. Senckenberg. Naturf. Ges. Frankfurt, xxxi. (1910) pp. 21-72. 

 II American Fern Journ., i. (1910) pp. 2-6 (fig.). 

 ^ American Fern Journ., i. (1910) pp. 7-9. 

 ** American Fern Journ., i. (1910) pp. 9-12. 



