Tap. 8488, 
PyRUS 10ENSIS. 
Central United States. 
Rosaceak, Tribe Pomrar. 
Pyrus, Linn.; Benth. et Hook. f. Gen. Plant. vol. i. p. 626. 
Pyrus ioensis, J. H. Bailey in Amer. Gard. vol. xii. p. 473; ies 
P. coronariae, Linn., et P. angustifoliae, Ait., arcte affinis, ab ambabus 
foliis persistenter tomentosis facile distinguenda. 
Arbor decidua, 6-9-metralis; truncus 3-4:5 dm. crassus; coma laxiuscula; 
ramuli graciliores nonnunquam in spinas abeuntes, primum dense lanati 
demum glabrati. olia petiolata, ovato-rhomboidea vel ovata, acuta, basi 
cuneata, margine grosse irregulariter saepe duplicato-serrata, ramulorum 
sterilium hornotinorum saepissime prope basin distincte lobata, 7°5-12°5 
cm. longa, 5-9 cm. lata, ramulorum hornotinorum floriferorum vix lobata, 
5-7°5 em. longa, 3-5 cm. lata, supra saturate viridia, nisi tomento 
caducissimo glabra, subtus primum dense demum laxe _persistenter 
tomentosa; petiolus 1°25-3°5 em. longus; stipulae subulatae. _ Flores 
violam olentes in corymbos 4-7-floros dispositi; singuli 4-5 em. lati, longe 
pedunculati; pedunculi 3-4 cm. longi, floccosi. Ca/ya extra dense albo- 
tomentosus; lobi 6 mm. longi, subulati. Petala concava, obovata, 
unguiculata, unguis 3 mm. longus, Stamina numerosa; filamenta glabra; 
antherae luteae. Ovarium styloque floccosum. Fructus fragrans, luteo- 
brunneus, depresse globosus, 2°5-3 em. latus, calyce persistente coronatus; 
carnes duriusculi peracerbi.—P. corunaria, var. ioensis, Wood ex Sargent 
in Silva of N. Amer. t. 167. Mulus ioensis, Britton & Brown in Ill. Fl. 
Nor, U. 8. vol. ii. p. 235; Sargent in Trees of N. Amer. p. 354, fig. 278. 
M. coronarius, var. ioensis, C. K. Schneider, Ill. Handb., Laubholzk. vol. i. 
p. 724.—W. J. Bran. 
The American Crab here figured is one of a well-marked 
group of three distinguished, in the Malus group of the 
genus Pyrus, in flowering latest of all and in having violet- 
scented flowers. The better known of the other two is 
Pyrus coronaria, Linn., a species figured at t. 2009 of this 
work, which is distinguished by having its leaves truncate 
or slightly cordate and by having them, when mature, 
nearly or quite glabrous. The other species, P. angustifolia, 
Ait., also differs in having its leaves glabrous at maturity 
and is very readily distinguished in having fruits that are less 
than an inch in diameter. It is, besides, a Southern species 
which reaches Florida, whereas P. ioensis has its own well- 
defined area west of the Alleghanies; it is described as 
being the common Crab of the Mississippi basin. As a 
tree for gardens P. ivensis is strongly to be recommended, 
Arrin, 1913, 
