IO8 PATAGONIAN EXPEDITIONS: BOTANY. 



very well, except in one particular. According to O. Kuntze, the inner 

 perianth-leaves of ft. crispissimns have a globose callus. This is not the 

 case with R. decumbens, although its inner perianth-leaves really are pro- 

 vided with callus-like swellings ; but they consist of a loose, pulpose 

 texture with pretty large and air-filled cells. With that exception, both 

 descriptions agree and it, therefore, appears to me as if O. Kuntze, some- 

 what hastily, had assumed the swellings of the perianth-leaves to be 

 callus-formations, and had not taken the trouble to ascertain if they 

 actually were such. (Dusen.) 



Spegazzini and Skottsberg unite both species into one. 



P. 349: Delete R. decumbens Dus.; syn. of R. crispissimus. R. de- 

 cumbens Dusen occurs also in a valley by Rio Pelque (Dusen). It is R. 

 crispissimus OK., fide Spegazzini. 



P. 350 : Rumex magellicamts Grisb. is R. crispissimus OK. (fide Teodoro 

 Stuckert). 



Add Macl., p. 350: 



RUMEX OBTUSIFOLIUS Linn. 



Leaves ovate cordate, obtuse, upper leaves narrower and acute. Whorls 

 lax, distant ; inner valves of ripe calyx ovate-hastate, with basal teeth, i 

 of them grain-bearing. 

 Falkland Is., introduced. 

 P. 353: 



ANTIGONON Endl. 

 Delete. 



A. LEPTOPUS Hook, et Arn.; not in our district. 



MUEHLENBECKIA Meissn. 

 Add Macl., p. 354, line 14: 



M. THAMNIFOLIA Meissn. 



Glabrous shrub, branches twining, terete, sulcate, angled at apex, 

 ochreae long; leaves somewhat fleshy, petiolate, cordate-ovate, acute or 

 acuminate, veinous, racemes axillary, pedicels very short, stigmas subses- 

 sile ; achenes enclosed, shining, globose-ovate, with trigonal apex. Leaves 

 larger than in M. chilense ; racemes often paired or branched. 



N. W. Patagonia, Rio Puelo. 



P. 345 : 



