BECANDRiA DiGYNiA. Saxifraga. 
acute tridentatis, caule adscendente racemoso, petalis 
lanceolatis calyce triplo longioribus. IVilld. sp. pl. 2. 
p. 657. 
Icon. FI. dan. gy6. 
On Hudson's Bay. 1/ . June. v. s. in Fieri. Banks. 
Flowers large, white, handsomely punctated. 
381. TIARELLA. Gen.pl. 765. 
1. T. foliis cordatis acute-lobatis dentatis, dentibus mucro- 
natis, scapo racemoso. — IVilld. sp. pl. 2. p. 05 9. 
Icon. Her rn. par ad. \2g. Lam. illustr. 373. 
In shady woods of Canada, and on the high mountains of 
New York and Pensyl vania. 1/ . April, May. v.v. 
Flowers white. 
2. T. foliis ovatis cordatis acutis brevi-lobatis dentatis, cau- 
linis alternis distantibus, racemo filiformi subspicato, 
calycibus tubulosis. 
On the north-west coast. Menzies. U r . v. s. in Herb. 
Banks. More than a foot high, with five or six alter- 
nate leaves on the stem. 
3. T, foliis ternatis, foliolis subrhomboideis serratis pilosis» 
racemis terminalibus, corymbuiis florum alternis, caly- 
cibus campanulatis. — IVilld. sp. pl. 2. p. 65g. 
On the north-west coast. Menzies. I/ . v. s. in Herb. 
Banks. 
4. T. foliis biternatis, foliolis ovato-cordatis obliquis inciso- 
lobatis dentatis, caule folioso, panicula terminali di- 
varicato- spiciflora. Vent. malm. 54. 
On the mountains of South Carolina. 1/ . May. v. v. 
This plant resembles Spircea Aruncus in habit ; flow- 
ers yellowish-white. The 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. — IVilld. sp. pl. 2. p. 65g. 
Icon. Bob. ic. 80. Schkuhr handb. 1. t. 120. Lam. il- 
lustr. t. 373. f. 1. 
In shady places, among rocks, near springs. 1/ . May. 
SIS 
cordifolia. 
Menziesii. 
trifoliata . 
biternata. 
diphylla . 
