16 Ex herbario Hassleriano: Novitates paraguarienses. IX. 
Paraguay: In arenosis ad ripam fluminis pr. Concepcion, flor. et 
fruct. mens. Sept.; Hassler no. 7343 (sub M. cinerea Vell. in Pl. Hassl., 
II, p. 412). 
Var. 8. elliptica (Benth.) Hassler. 
M. elliptica Benth., Hook. Journ. Bot., IV, 400. 
Forma aridicola var. genuinae nob. Pinnis minus numerosis, foliolis 
glabrioribus rigidioribus, capitulis ut in var. intermedia nob. ellipticis, 
floribus fere glabris, diversa. 
In Paraguaria vacat; habitat: Brasilia: In collibus arenosis circa 
Rio de Janeiro ex Benth., l. c. 
Var. y. intermedia Hassler, nov. var. 
Indumentum appresse strigosum var. d. cinereae nob., capitula ob- 
longo elliptica var. 3. ellipticae nob.; legumen multi articulatum var. «. 
genuinae nob. 
Frutex 1,5—3 m, ramuli strigis brevibus, erectis, caule arcte ad- 
pressis, plus minus dense obtectis, stipulae villosae vel vix puberulae, 
lanceolatae, petiolus communis. 10—15 cm longus, 6—15 jugus, strigis 
erectis appressis dense obtectus; foliola 20—30-juga (vel ultra), supra 
glabrescentia subtus puberula, margine setuloso-ciliata; pedunculi 15 — 
25 mm dense appresse erecto-strigosi; capitula elliptica, vel elliptico- 
oblonga, ante anthesin oblonga, corollae lobis appresse dense strigosis, 
vel appresse strigoso-villosis, legumen lineari-oblongum, leviter arcuatum 
ad 6 cm longum et 8 mm latum, marginibus setis strigosis adpressis 
dense obtectis, valvis setis longiusculis arcte appressis subdensis obtectis, 
in articulos, anguste oblongos, 20 -25 secedens. 
Forma 1. armata nob. 
Rami aculeis erassis recurvis vel subrectis, basi strigulis obtectis, 
armati; petiolus aculeis subrectis vel leviter recurvis, acerosis, inter 
pinnarum juga plurima, armatus, stipulis pilis fulvis dense villosis, pe- 
dunculi axillares vel summi breviter racemosi. 
Paraguay: In paludibus ad flumen Iuqueri, flor. et fruct. mens. 
Jul.; Hassler no. 623; id. in campis humidis pr. San Bernardino, flor. 
et fruct, mens. Jul. et Oct.; Hassler no. 546 et no. 1982. 
Forma 2. inermis nob. 
Ramuli ut petioli communes inermes; pedunculi in axillis inferioribus 
breviter racemosi, racemus 5—6 cm longus, pedunculi 1—1,5 cm; summi 
racemum elongatum formantes, stipulae striatae, margine ciliatae, glabres- 
centes, legumen ut supra descriptum, articulis 15—20. 
Paraguay: In paludosis pr. Bella Vista in regione fluminis Apa, 
flor. et fruct. mens. Dec.; Hassler no. 8149. 
Var. J. cinerea (Vell.) Hassler, nov. var. 
Mimosa cinerea Vell, Flor. Flum. lc., XI, t. 35; Benth. in Hook. 
Journ. Bot., IV, 401; id. in Flor. Bras., XV, 2, p. 383 et var 8. pubescens 
Benth. Flor. Bras., l. c. 
Forma halophyta, vel aridicola. Indumentum var. y. intermediae nob. ; 
capitula var. 3. elliplicae et y. intermediae nob.; legumen pauciarticu- 
