194 Memoirs IJcniicc P. Bisliof' Museum 



Lanai : Munro in 1914. 



Maui: Without locality, Hillebrand in 1858. 



Hawaii: Kanehaha, Forbes 259; Papaalo, Forbes 313, 315a. Kukaiau Ranch, 



Hitchcock 14208, 1425 1, 14256, 14264. Hualalai Mountains, Hitchcock 



14518; Alann & Brigham 237." Humuula Sheep Station, Hitchcock 14413; 



\\'aimea, Na Puu o Pele, Wilkes Expl. Exped. 

 Without locality: Hillebrand. 



Dr. Stapf has kindly sent me a portion of the top of J'aiiicum tciiuifoHuni 

 Hook. & Arn. collected at "Oahu Bay". The blades are narrow and involute, 

 glabrous on the under or outer surface, densely pubescent and more or less pilose 

 on the upper surface. The plant is described originally as glabrous, the upper 

 surface of the blades not having been investigated. The general aspect and the 

 character of the jnibescence place this with the specimens referred by Hillebrand 

 to his variety rhyacopJiUiim. 



Hillebrand's variety fcmiifolium is based upon I'auicum iciiuifoliuin Hook. 

 & Arn. but Hillebrand mentions two other specimens besides the type, as follows, 

 "]\Iolokai! pali of Alakonalua; Alaui! Haleakala; Oahu (Lay & Collie). In speci- 

 mens from E. Maui a slight pubescence becomes \isible on the nodes of the stems 

 and on the leaf-sheaths". Among the specimens sent by Dr. Stapf there are three 

 from Maui collected by Hillebrand labeled respectively, "Haleakala 538", "Makawa 

 E. Maui 64", and "Maui 536". The first one is the common form of his variety 

 rhyacopliihi)u which I am referring to Paiiicum tciiuifolium Hook. & Arn. 'I'he 

 second and third appear to be the same form and may be duplicates. Some of the 

 blades are flat, glabrous, and as much as 5 mm. wide, other blades are involute and 

 finely pubescent. The plants are cespitose. 25 to 30 cm. tall. These may he the 

 specimens referred to by Hilleljrand as having a slight pubescence. The Haleakala 

 specimen is so evidently pubescent as to appear to be excluded from this reference. 

 Hillebrand's Mdlokai specimen was kindly sent me from the Berlin Herbarivun by 

 Dr. Diels. This has glabrous blades as much as 5 or 6 mm. wide, flat below and 

 involute above. I have referred this to P. neplielopJiilniii as a small form. Pos- 

 sibly these intermediate specimens constitute a distinct species. This can be deter- 

 mined only by more material. 



A specimen in the herbarium of Cornell University, without data, is labeled 

 Paniciim nephelophilitm Gaud. P. tciiuifolium Hook. & Arn. and bears the note 

 "[revised 1885 by Dr. W. Hillebrand]." The blades are narrow and velvety with 

 a fine hirsutulous pubescence. 



15. Panicum issachnoides Munro : Ilillehr. Fl. Haw. Isl. 501. 1888. 



Paniciim coiiclioidcuiii Hillebr. as synonym under P. isacliiioidcs. 



Plants perennial, forming dense tussocks as mucli as 20 or 30 cm. or more in diameter, 

 repeatedly branching:, the lower parts of the cuhns dying- and the new shoots appearing at the 

 periphery ; culms indefinite in length but the new shoots only a few centimeters long, the leaves 

 closely imbricate ; sheaths striate, more or less pubescent, mostly hidden by the imbricate blades : 

 ligule a very short ciliate membrane 0.5 mm. long; blades horizontally spreading I to 3 cm. 

 long, 5 to 7 mm. wide, conspicuously papiliose-ciliate, flat and firm, oblong-lanceolate, conchoid 

 or spoon-shaped, striate, clasping at base ; panicle narrow anrl few-flowered, i to 2 cm. long, 



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