TRIANDRIA, MONOGYNIA. £3 
gins; several species, however, have linear and almost 
grassy foliage. The I. tuberosa has 4-sided leaves. 
Species. 1. L cristata.2. haxagona. 3. versicolor. 4. cu- 
prea. 5S. tripetala, 6. verna? Root tuberous, reddish; leaves 
radical, linear-ensiform, rigidly coriaceous, very acute, 
margined, dark green, somewhat spirally twisted at the 
base, about 6 inches long; young shoots and scapes 
sheathed with linear-lanceolate stipules of a pink red 
colour; scape 1-flowered, nearly radical; tube of the co- 
rolla triangular, (about 2 inches long); germ attenu- 
ated, triquetrous; lacinie appearing articulated upon 
the tube; inner and outer divisions nearly equal, ob- 
long-obovate, pale blue, the 3 exterior marked with 
an oblong orange-yellow maculate stripe, having a cen- 
'. tral, slightly villous, raised line; stigmata linear-oblong, 
deeply bifid. (This is certainly a distinct plant from 
the I. verna of Pursh; but agrees with Michaux ex- 
cept in having. in common with the generality of this 
genus, a tuberous, and not a simply fibrous root. 
This species is nearly allied to the Z cristata, but 
the flower is smaller, without the crest or beard, some- 
sweet-scented, and of finely contrasted colours. The 
root, like the Z. cristata, leaves a burning sensation on 
the palate after mastication, a circumstance, however, 
common to several other species. 7. sibirica. 8. prismatica. 
9. *lacustris; flowers without a bearded crest; leaves short, 
ensiform; scape much shorter than the leaf, 1-flowered; 
petals nearly equal? attenuated on the tube; capsule tur- 
binate, 3-sided, margined; seeds somewhat round, and 
SMooth; roots tubcrous. 
Oss, Roots laterally produced to a considerable extent 
80 as to form wide and dense tufts; leaves rarely more — 
than 6 inches long, scapes generally 1-flowered and still 
shorter flower pale blue. : 
Hazirart. On the gtavelly shores of the calcareous 
islands of lake Huron, near Michilimakinak. (Ihave seen 
no perfect specimens, and therefore recommend the exa- 
mination of this plant to future botanists.) Itappears to _ 
be allied to I. cristata. : : 2 
Many species of this genus have been discovered 
at the Cape of Good-Hope, a few in Barbary, 1 or 
2 species in China, and as many in Japan, the rest 
have been found jn East Asia (Siberia,) Europe, and. 
North America. Not a single species has yet been 
discovered in South America, or any other portion of the - 
southern hemisphere, except the southern promontary of 
_ Africa. The species in the United States, with tl -excep- 
tion of the Z verna, (as described by Mr. Pursh) have 
oe 
