Vermischte neue Diagnosen. 121 



corolla flava, extra subpurpurea, intra purpurea, ad basin gibbosa, glabra 

 vel raro ad basin subpubescente, bilabiata ad vel plerumque infra medium, 

 lobis late obtusis; stuminibus leviter exsertis, filamentis purpureis ad 

 basin pubescentibus; stylis purpureis saepe pubescentibus. cum filamentis 

 aequilongis; ovariis glabris prope ad apicem connatis: baccis globosis, 

 bioculatis 1,0 — 1,4 cm crassis, sucidis, rubris, plerumque glaucis ; semini- 

 bus 3 — 4 mm longis, laevibus, lucidis, ochraceis plerumque plus minusve 

 oblongo-lenticularibus. 



The type specimens, now in the Pennsylvania Herbarium of the Car- 

 negie Museum, were collected by the writer about one mile southeast of 

 Linesville, Crawford County, Pennsylvania, in the Pymatuning-Swamp. 

 Specimens were collected in full bloom June 7, 1904, with ripe fruit, 

 August 19, 1904, and again June 13, 1905, shortly after the bloom had 

 fallen. The plants were growing in a water- soaked soil partly covered 

 with Sphagnum and were associated with Rhus vernix Linaeus, Alnus 

 incana (Linnaeus) Willdenow, Ilicioides mucronala (Linnaeus) Britton, 

 Spathyema foetida (Linnaeus) Rafinesque, Sarracenia purpurea Linnaeus, 

 etc., the whole constituting an ecological formation probably transitional 

 to the typical Tamarack- Sphagnum bog formation. 



The specific name, altissima, has been given this plant because of 

 its tall, slender habit. Many of the shrubs were over ten feet in height, 

 a height probably not attained by any other shrubby Loniceras of 

 northeastern North America. 



Specimens closely approaching the type specimens of Lonicera altis- 

 sima were seen by the writer, as follows: Swamps, Courtland, Ontario 

 (Macoun, 62956); Stittsville, Ontario (Macoun); New Haven, Vermont 

 (Brainerd). 



256. Potamogeton carinatus K. R. Kupffer in Korrespondenzblatt 

 Naturf. Ver. Riga, XLIX (1906), p. 164. 



Species nova e sectione Potamogetonis zosterifolii Schum. (Raunkiaer, 

 „Anatomical Potamogeton-Studies" in Botan. Tidskr., XXV, 3, Kopenhagen 

 1903), P. acutifolio Lk. valde affinis, a quo differt spica ejusque scapo 

 longiore et carina dorsali fructuum etiam "acutiore. 



Descriptio: Caulis ramossimus, complanatus sed minime alatus (ut in 

 P. zosteri folio), diametro transversali longiore 1,0-1,6 mm, breviore 

 0,3 — 0,6 mm longo. Fasciculi caulis vasculares in cylindrum centralem. 

 transverse ovalem conjuncti, inter sese haud manifeste separati. Cellu- 

 larum endodermis membranae circumcirca valde incrassatae. Fasciculi 

 subepidermales libriformes numerosi. 



Folia linearia, 4 — 10 cm longa, 1,5—3 mm lata, acutissime acuminata, 

 ntrvibus crassioribus, vasculiferis 5, inter quos nervi tenuissimi. fasci- 

 culos cellularum libriformium solum continentes, multi observantur. 



Foliorum ligulae usque ad 1,5 cm longae, subflorales usque ad 0,5 cm 

 latae, ceterae multo angustiores; omnes pallidae. 



Spica 0,6—1,3 cm plerumque circiter 1 cm longa, subrariflora, floribus 

 10—15. Scapus 2 — 7, plerumque 4 — 5 cm longus. 



