158 Chase — Notes on Genera of Panicece. TV. 



Panicum cimicinum Retz." Xees states that the genus is allied to An- 

 thaenantia Beauv., but is distinguished by the two-flowered spikelets, 

 the fertile floret aristate. 



Bentham (Fl. Austr. 7 : 473. 1878) gives " Coridoehloa semialata, 

 Nees in various catalogues and herbaria" as a synonym of Panicum 

 semialatum R. Br., and adds "(the genus not published as generally 

 quoted in Edinl>. New Phil. Journ. 1832, July)." It would seem that 

 Bentham must have cited this name and reference from memory. We 

 can not rind that Xees himself ever placed P. semialatum in Coridoehloa, 

 nor can we find any reference to the publication of the genus in 1832. It 

 was probably a slip of memory on Bentham's part for 1833. The genus 

 Coridoehloa is proposed in a footnote with the statement that it will be 

 treated of at another time, hence Bentham may have considered it as 

 insufficiently published. But Xees states that the genus belongs in the 

 tribe Panicese, names a type species, previously described, and gives the 

 principal distinguishing characters of the spikelet. In Wallich's Cata- 

 logue US-Ht) no. S74 u "Coridoehloa fimbriata Xees ab Esenbeck " is 

 listed. "A. .Milium cimicinum 1 1 1 >. Heyn." and " B. Panicum cimicinum 

 Mb. Ham." being given under it. (In a note on page 132 of the Cata- 

 logue il is stated that ".Mr. Brown * * * has had the goodness * * * 

 to furnish the provisional list of the family" of grasses). In a criticism 

 of Xees, Bentham (Linn. Soc. Journ. Hot. 19: IS. 1881) again says 

 "Brown's Australian Panicum semialatum, for instance, is raised by 

 Nee- to the rank of a genus under the name of Coridoehloa in India, and 

 that of Bluffia in South Africa." It may he that Bentham did not know 

 Panicum cimicinum Retz., for (op. cit. 42) he says "P. semialatum Br. 

 is widely spread over the Old World, for I am unable to distinguish the 

 Asiatic Coridoehloa, Xees, and the South African Bluffia, Xees, from 

 Br< iwn's Australian species.' ' 



Hooker ( Fl. Brit. Ind. 7 : (14. 1896) places Panicum cimicinum and P. 

 semialatum under Axonopus Beauv. (See discussion under that genus.) 

 Under the second species is given as a synonym " Coridoehloa xemi-alata, 

 Nees, in Edinb. New Phil. Journ. XV. (1833) 381." This is an error, 

 Xees makes no mention whatever of P. semialatum nor of any species 

 but /'. cimicinum Petz. 



This unique species has been placed in Milium (by Linnaeus) in 

 Panicum ( by Retains), in Axonopus (by Beauvois), in Urochloa (by 

 Kunth ), and finally in Coridoehloa, based on it alone, by Xees. 



Coridoehloa, which is perhaps rather remotely allied to the next genus, 

 is distinguished by the concavo-convex, scarcely indurated, stipitate fruit, 

 the lemma attenuate into an awn about as long as the body of the fruit, 

 the palea sparsely covered with stalked glandular hairs (in appearance 

 like minute fungi), a few 7 of these sometimes scattered on the margin of 

 the lemma; by the papery glumes and sterile lemma, the second glume 

 conspicuously stiff-ciliate along the lateral internerves, and by the digitate 

 inflorescence, the slender racemes naked at the base or for half their 

 length. 



