Tab. 7899. 

 MIMOSA Spegazzinij. 



Native of Argentina. 



Nat. Ord. Lkguminos*. — Tribe EcjjiijiosEjE. 

 Genus Mimosa, Linn. \ (Benth. & JTook.f. Gen. Flant. vol. i. p. 593. 



Mimosa (Eumimosa) Spegazzinii ; frutex gracilis*, scandens, ramosus, 6-10- 

 pedalis, spinis infra-i'oliaceiB brevibus oppositis recurvis horridus, ramis 

 ratnulis petiolis pedunculisque strigillosis, foliis sensitiviB bipinnatis, 

 pinnis 2-pollicaribus breviter petiolulatia basi atipellatis, pinnulis 25-35- 

 jugis ad £ poll, longis sessilibus contiguis lineari-oblongis obtusis acutisve 

 apice mucronnlatis 3-nerviis supra glabris subtus apicem versus adpresse 

 pilosis marginibus setulis rigidis appressis instructis, 6tipulis ovato- 

 lanceolatis acutis striatis ciliatis, capitnlis 1 poll. diam. solitariis v. binis 

 axillaribus v. in racemum terminalem disposdtis, pedunculis brevibus v. 

 elongatis, bracteolis cuneiformibus apice truncatis setosis, seta media 

 elongata, corolla 4-loba, filamentis roseie, antheris aureis, legumine im- 

 tnaturo pollicari lineari valvis articulatis marginibus spinuloso-setosis. 



M. Spegazzinii, Pirotta in Ann. Inst. Bot. Bom. vol. iii. (1887-8) p. 132, t. xiii. 



The sensitive plant here figured is a native of Missiones, 

 Argentine Republic. It was discovered there by the 

 naturalist whose name it bears, who sent seeds to Pro- 

 fessor R. Pirotta, of Rome, by whom it was described. 



Seeds of it were obtained for the Royal Gardens, Kew, 

 in 1900 from Dr. Hans Schinz, Director of the Botanic 

 Garden, Zurich, a plant raised from which flowered freely 

 in a stove in October, 1902. The leaves are sensitive, as 

 in its ally, M. pudica, L., to which it is nearly allied. In 

 Prof. Pirotta's description the stem is described as erect, 

 and the filaments as pale violet. 



_ Descv. — A scandent, much-branched, pubescent bush, 

 six to ten feet high, with short, stout, opposite branches 

 armed with recurved spines at the base of the petioles. 

 Leaves bipinnate, sensitive; petiole about an inch long, 

 bearing two pinnse, each two to three inches long; 

 pinnules very numerous, sessile, close set, about one- 

 third of an inch long, oblong or linear-oblong, acute 

 or acuminate, three-nerved, glabrous beneath, margins 

 ciliolate with long bristles ; stipules a quarter of an inch 

 long, oblong-lanceolate, acute ; stipellre subulate. Heads 

 June 1st, 1903. 



