No. 1, Octobeb, 1920) TAXONOMY OF VASCULAR PLANTS 57 



407. Gagnepain, F. Vernonia nouveaux d'Indo-Chine. [New Vernonias from Indo- 

 China.] Bull. Mus. Hist. Nat. [Paris] 25: 487-193. 1919. Tin following species are charac- 

 terized as new to science: Vernonia Balansae, V. Bonapartei, V. Chevalieri, V. Eberhardtii , 

 V. macrachaenia, V. Pierrei, V. Principis, V. saigonensis, V. subacualis, V. Thorelii, V. 

 tonkinensis, and V. virgata. — E. B. Payson. 



408. Gagnepain, F. Nouveaux Begonia d'Asie; quelques synonymes. [New Begonias 

 from Asia; a few synonyms.] Bull. Mus. Hist. Nat. [Paris] 25: 194-201, 276-283. 19 fig. 1919. 

 — The following new species, new names and new specific combinations are proposed: Begonia 

 Balansaeana, B. baviensis, B. Boisiana, B. Bonii, B. Delavayi, B. Duclouxii, B. Eberhardtii , 

 B. Gcoffrayi, B. Harmandii, B. hymenophylla, B. Lecomtei, B. Pierrei, B. siamensis, B. tali- 

 etisis, B. tonkinensis, B. Wilsonii, B. salziensis (Meziera salaziensis Gaud.), B. Decaisneana 

 (B. aptera Decne.) and B. Hayatae {B. aptera Hayata). — E. B. Payson. 



409. Gagnepain, F. Acareosperma, un genre nouveau d'Ampelidacees. [Acareosperma, 

 a new genus of the Ampelidaceae.] Bull. Mus. Hist. Nat. [Paris] 25: 131-132. 1919.— Acareo- 

 sperma Spireanum from southern Asia is described as a new species and the type of a new 

 genus. — E. B. Payson. 



410. Gagnepain, F. Quelques Passifloracees nouvelles ou critiques des genres Adenia 

 et Passiflora. [Some new or critical species of the Passifloraceous genera Adenia and Passi- 

 flora.] Bull. Mus. Hist. Nat. [Paris] 25: 126-130. 1919. — The following species and varieties 

 from southern Asia are characterized as new to science: Adenia Chevalieri, A. Harmandii, 

 A. parvifolia, A. Pierrei, Passiflora octandra, P. octandra var. cochinchinensis, P. octandra 

 var. attopensis, P. octandra var. glaberrima. — E. B. Payson. 



411. Godfery, M. J. The problem of the British marsh orchids. Jour. Botany 57: 

 137-142. 1919. — Are there two or three species of British bog orchids, and are all other forms 

 hybrids of these three? Is O. praetermissa Druce a valid species or a hybrid? Is O. latifolia 

 a good species or is it mainly O. praetermissa? The paper deals with these questions, but with- 

 out finding their solution. The author considers in detail the value of characters, especially 

 the spotting of the leaves. Mr. Rolfe's contention that O. praetermissa is true O. latifolia 

 is discussed at length. The author has seen O. latifolia in many parts of Europe where O. 

 praetermissa is not found. He concludes that while there is no doubt that O. praetermissa is 

 the O. latifolia of English authors, it is open to question whether it is O. latifolia L. as under- 

 stood on the Continent. Most of the spotted European orchids are sometimes found without 

 spots. Mr. McKechnie has suggested that ring-spotted latifolia was originally a hybrid 

 between maculata and praetermissa. The behavior of other orchid hybrids is compared with 

 this case. All evidence goes to show that when spotted maculata is crossed with an unspotted 

 species, the offspring is not spotted. The problems arising here are classified by the author. 

 Two main problems, and seven special points should receive investigation. Hope is expressed 

 that botanists will make some artificial crosses with these parents. It is suggested that soil 

 be used in which the parent grew, as an organism (Rhizoctonia) is necessary in order that the 

 seeds may germinate. (See F. E. Weiss, on Seeds and Seedlings of Orchids, Proc. Manchester 

 Microsc. Soc. 1917). — K. M. Wiegand. 



412. Gtjerin, P. [Rev. of: Berger, Marie-Gaston. Etude organ ographique, anatom- 

 ique et pharmacologique de la famille des Turneracees. (Organographic, anatomic and pharma- 

 cologic study of the family Turneraceae.) 270 p. 53 pi. Vigot Freres: Paris, 1919.] Bull. 

 Sci. Pharm. 26: 533. 1919.— See Bot. Absts. 5, Entry 805. 



413. Guillaumin, A. Contribution a la flore de la Nouvelle-Caledonia. [Contribution to 

 the flora of New Caledonia.] Bull. Mus. Hist. Nat. [Paris] 25: 213-217, 28S-295. 372-378, 499- 

 505. 1919. — In continuation of previous similar articles, the author publishes in these several 

 napers lists of species collected in New Caledonia by various collectors. Critical notes are 

 included and some citation of synonymy. The following new specific diagnoses and new 



