F 
DECANDRIA DIGYNIA, Saxifraga. 
acute tridentatis, caule adscendente racemoso, petalis 
lanceolatis calyce triplo longioribus. Willd. sp. pl. 2. 
p. 657- : à 
Icon. Fl. dan. 076. 
On Hudson's Bay. XY. June. v. s. in Herb. Banks. 
Flowers large, white, handsomely punctated. 
381. TIARELLA. Gen. pl. 765. 
1. T. foliis cordatis acute-lobatis dentatis, dentibus mucro- 
natis, scapo racemoso.— Willd, sp. pl.2. p. 659. 
Icon. Herm. parad. 129. Lam. illustr. 373. 
In shady woods of Canada, and on the high mountains of 
New York and Pensylvania. 2. April, May. v.v. 
Flowers white. r ; 
2. T. foliis ovatis cordatis acutis brevi-lobatis dentatis, cau- 
linis alternis distantibus, racemo' filiformi subspicato, 
calycibus tubulosis. 
, On the north-west coast. Menzies. Y. v.s. in Herb. 
Banks. More than a foot high, with five or six alter- 
nate leaves on the stem. 
8. T. foliis ternatis, foliolis subrhomboideis serratis pilosis, 
racemis terminalibus, corymbulis florum alternis, caly- 
cibus campanulatis.— Willd. sp. pl. 2. p. 659. 
On the north-west coast, Menzies. Y. v. s. in Herb. 
4. T. foliis biternatis, foliolis ovato-cordatis obliquis inciso- 
lobatis dentatis, caule folioso, panicula terminali Ji- 
varicato-spiciflora. Vent. malm. 54. — . 
On the mountains of South Carolina. Y. May. v.v. 
This plant resembles Spiræa Aruncus in habit; fow- 
ers yellowish-white, ‘he specimens I had an oppor- 
.' tunity to examine were destitute of petals, though they 
“are so distinctly described by Ventenat. It is how- 
. ever probable that some individuals may be petali- 
` ferous, while others are apetalous. 
382. MITELLA. Gen. pl. 766. 
1. M. foliis sublobato-acutangulis dentatis, caule erecto su- 
perne opposite diphyllo.— Willd. sp. pl. 2. p. 659. 
Icon. Rob. ic. 80. Schkuhr handb. 1. 1.120. Lam. il- 
 lustr. t. 373. f. 1. Ex S 
n shady places, among rocks, near springs. y. May. 
m 
E 313 
cordifolia, 
Menzies 
biternata» 
diphylla. 
