GRASSES OF GRONOVIUS 's FLORA VIRGINICA. 129 



also makes the same citation under Stipa avenacea. In the second edition of the 

 Flora Virginica Gronirvius refers to Clayton no. 621 under two species, on page 15 under 

 Stipa, and on page 158 under Andropogon. The Clayton specimen is Stipa avenacea. 



Panicum paniculatum glumis acutis. Gron. Fl. Virg. 2: 133. 1743. 



Two specimens are included: 1. Gramen miliaceum altum maritimum foliis Arun- 

 dinis. Clayton, no. 578; and, 2. Gramen miliaceum altissimum, panicula omnium 

 maxima sparsa, etc., Clayton, no. 606. Both are Panicum virgatum. This is cited by 

 Linnaeus under Panicum virgatum, with the proper Clayton diagnosis, ' ; Panicum pani- 

 culatum, glumis acutis Gron. Virg. 133." Clayton 606 a is also cited by Gronovius 

 under Andrapogon, page 132, but it is a different diagnosis and a different specimen. 



Panicum paniculis simplicibus, culmo ramoso subdiviso. Gron. Fl. Virg. 2: 

 133. 1743. 

 Clayton, no. 458. This is cited by Linnaeus under Panicum dichotomum, of which 

 it is the type. This sheet has two plants, Panicum dichotomum L. as usually under- 

 stood and P. oligosanthes Schult. The description applies better to the former, 

 which, therefore, has been selected as the type specimen. For further discussion 

 see page 117. 



Panicum spica simplici, aristis aggregatis flosculo subjectis. Gron. Fl. Virg. 

 2: 134. 1743. 

 Clayton, no. 579. This is cited by Linnaeus under Panicum glaucum y. The 

 specimen is Chaetochloa glauca (L.) Scribn. 



Panicum spicis alternis oppositisve linearibus patentissimis muticis, etc. Roy. 

 prodr. Gron. Fl. Virg. 2: 134. 1743. " Crab-grass." 

 Clayton, no. 457. This is cited by Linnaeus under Panicum sanguinale. No speci- 

 men could be found. 



Panicum spicis alternis remotis declinatis compositis. Linn. Virid. Gron. Fl. 

 Virg. 2: 134. 1743. 

 Clayton, no. 591. This is not cited by Linnaeus. Under Panicum italicum he cites 

 "Gron. Virg. 134," but the diagnosis is different from anything given by Gronovius. 

 In the second edition of Gronovius the Clayton number is misprinted 561. The speci- 

 men is Echinochloa crusgalli (L.) Beauv. 



Dactybs spicis secundis alternis erectis approximatis, calycibus unifloris 



subulatis. Gron. Fl. Virg. 2: 134. 1743. 

 • He characterizes this further as ' ' Gramen maritimum spicatum foliis longis angii- 

 tis" , etc. Clayton, no. 583. This is cited by Linnaeus under Dactylis cynosuroides /3. 

 The specimen is Spartina glabra Muhl. 



Gronovius here alludes to two other specimens (" Hujus Generis sunt "). 1. Gramen 

 maritimum spica crassa dactyloide, etc. Clayton no. 577. This is cited by Linnaeus 

 under Dactylis cynosuroides. The specimen is Spartina cynosuroides (L.) Willd. 

 {Spartina polystachya (Michx.) Ell.) 2. Gramen avenaceum locustis argenteis speciosis 

 lucidis muticis, uno versu laxe dispositis. Clayton no. 553. There is no specimen of 

 this and I do not find that it is cited by Linnaeus. 



Lagurus spicis oblongis pedunculatis, etc. Linn. Hort. Cliff. Gron. Fl. Virg. 

 2: 135. 1743. 

 Clayton, no. 606. ffl This specimen is cited by Gronovius under the " Andrapogon" 

 on his page 132 also. Linnaeus cites it under Andropogon bicorne. The specimen is 

 Andropogon glomeratus (Walt.) B. S. P. 



Lagurus humilior, panicula unica laxe nutante, culmum terminante. Gron. 

 Fl. Virg. 2: 135. 1743. 

 Clayton, no. 600. This is cited by Linnaeus under Andropogon divaricatum. The 

 specimen is Sorghastrum linnaeanum (Hack.) Nash. 



a See footnote page 128. 



