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98 
ACACIA. Houstoni. 
Houstoun’s Acacia. 
POLYGAMIA MONGECIA. 
Ord. Nat. Lecuminosm. Jussieu gen. 345. iid i 
ACACIA. Wenmarn. Cal. 5-dentatus. | Cor. (regularis jnfundi- 
buliformis,) 5-fida y, d-petala. Stam. 4-100. Pst. 1. _Legumen 
bivalve, (continuum s. non articulatum. Gerin.) a: pal 
Mascunt. Calyx, corolla, et stamina ac in hermaphroditis. Willd. 
sp. pl. 4, 1049, : 48 F 
Arbores aut frutices, inermes aut ad basin petiolorum passimve acu- 
leata. Folia abruptd pinnata, vespere contracta mane expanduntur. 
Flores capitati v, spicati, axillares terminalesve. Jussieu gen. 346 5 
(sub Mimosa.) a tay ae, - ia 
Div. Foliis duplicato-pinnatis, caule inermi, spicis filiformibus. 
A. Houstoni, inermis, foliis bipinnatis, partialibus subsexjugis, propriis 
multijugis, petiolis tomentosis, spica terminali interrupta. Willd. sp. 
pl. 4.1062. Hort. Kew. 2. 5. 465. 
Anneslia falcifolia. Salish. paradis. 64. 
Mimosa Houstoni. L? Herit. sert. angl. 80. Relig. houst. t. 263 (ic. 
sine titulo.) : 
Mimosa houstoniana. Mill. dict. ed. 8. 1.16. 
Gleditschia inermis. Linn. sp. pl. 2. 1509; (excl. syn. Duhameli.) 
cacia ainericana non spinosa, flore purpureo, staminibus longissimis, 
siliquis planis villosis, pinnis foliorum tenuissimis. Houst. MSS. 22. 
Mill, ic. 4. t. 5. ; 
_ Folia oblata, 6-8-juga ; pinnee subquadriunciales, multijuge, pinnulis 
contiguis lineari-angustis acumine brevi obliquo, basi per paria obverso-con- 
Sluentibus, rachidi subtis annexis ab angulo altero obliquato baseos, ab altero 
acuto et sublato liberis, subtiis appressé villosis, versus utrumque finem pinne: 
decrescentibus : rachis'communis basi articulata, partiales etiam. Racemus 
spicatus, distantér compositus, terminalis, erectus, fusco-villosus : pedunculi 
“3, agesregati, crassi, semunciales v. ultra, pedicellis capitato-4-6-floris, 
evisstmis, bast articulatis. Cal. inferus, parvulus, arctus, triplo brevior 
corolla, coriaceus, 5-fidus, lobis brevibus ovatis. Cor. coriacea, lenta, 5- 
_ “partita, extis fusco-villosa, intis albicans, glabra, & fundo breviter turbinato 
patens, lacinits ovato-lanceolatis, pluriés brevior staminibus. Filamenta nu- 
merosa, capillaria, biuncialia Lt sel basi in brevem urceolum incrassato — 
Sundo corolle accretum serie simplici connata, indé libera sanguineo-rubentia 
et laxiiis divergentia in coronam amplam obconicam: auth. parvule, lutea. 
Germ. album, ob ngum, inclusum urceolo stamineo, continuum cum stylo: 
stylus filiformis, parim Superans stamina, 2-3 crassior filamentis: stigma, 
album, pileato-capitatum. 
_ The differential marks principally relied upon in dis- 
tinguishing Acacta from Mimosa, genera intimately blended 
iE > ones 
