370 PROCEEDINGS OF THE AMERICAN ACADEMY 



Dr. Torrey, in making the rectification, proposes to call Newherrya, 

 in honor of the distinguished vegetable pah^ontologist and geologist 

 who discovei-ed it. The principal differences between these two genera 

 appear in the subjoined synopsis. That of the seven genera of the 

 group, all but the Linntean one should rest upon single species, is not 

 altogether satisfactory to contemplate ; but their characters are • so 

 marked that it does not seem possible to combine any two of them.* 



* Conspectus Generum Monotropearum. 



Tribus I. EUMONOTROPE^. Ovarium 4 - 5-loculare, placentis axilibus in 

 columnam crassara concretis. Testa seminum laxa reticulata. 



§1. Corolla nulla. Calyx 4 - 5-sepalus. Antherae in alabastro extrorsse basim 

 versus rimis brevibus dehiscentes, sub anthesi inversae introrsum pendulce. Semina 

 scobiformia. Nexus cum Pyroleis mediante Pyrola aphylla. 



1. Allotropa, Torr. & Gray, supra. 



§2. Corolla gamopetala. Calyx 4 - 5-sepalus. Antheras introrsae, 

 * MuticEe, apice foraminibus hiantes. CoroUse campanulata, 5-loba. Testa 

 seminum nueleo subconformis. 



2. ScHWEiNiTZiA, Ell. Antherae breves, didymse, in alabastro transversae, sub 

 anthesi introrsum pendulfe. Discus 10-crenatus. Stylus brevis crassus. 



3. Sarcodes, Torr. Antherte lineari-oblongae, erectse, supra basim affixae. 

 Discus nuUus. Stylus elongatus. 



** Antherae introrsum pendulte, dorso biaristatae, longitrorsum dehiscentes. 

 Corolla ovata, 5-dentata. Semina scobiformia apice insigniter alata. 



4. Pterospora, Nutt. 



§ 3. Corolla 4 - .5-petala, petalis basi gibbosis vel saccatis. Calyx imperfectus, 

 e bracteolis sepalisve 2-5. Antherae innatte, didymae vel reniformes, confluentira 

 uniloculares, ab apice transversim bivalves. Discus e dentibus 8 vel 10 deflexis. 

 Semina scobiformia. 



5. MoNOTROPA, Linn. {Hypopitys, Dill.) 



Tribus II. PLEURICOSPORE^. Ovarium uniloeulare : placentse 4-5 

 parietales, bicrures vel bipartit£e. Testa seminum tenuis nueleo arete conformis. 

 Discus nullus. Antherae innate, oblongo-lineares, biloculares, loculis parallelis 

 longitudinaliter bivalves. Stylus elongatus. 



6. Pleuricospora. Calyx completus, e sepalis 4-5 petalis discretis subcon- 

 formibus, utrisque fimbriolatis. Genitalia glabra. Antherae lateraliter dehiscentes 

 in valvibus fere aequalibus. Flores spicati. 



7. Newberrta, Torr. in Ann. Lye. N. Y. 8, p. 7, 1864. (Hemilomes, Gray, 

 nomen falsum.) Calyx incompletus, disepalus, bracteoliformis. Corolla gamo- 

 petala, urceolato-tubulosa, 4-5-ioba, lobis intus villosulis. Filnmenta filiformia 

 stylusque superne villoso-crinita. Antherae introrsum dehiscentes, loculis inae- 

 qualiter bivalvibus. Flores capitati. — Newbekrya oongesta, Torr. = Ilemito- 

 mes congestum, Gray. 



