Ss = 
320 ROSACES. [Sibbaldia. Spirzea. 
SIBBALDIA procumbens. Linn. Spec. 284. See syn. in Ledeb. Fl. Ross. 
2.32; Pritzel, Ind. Icon. 1026.—Pursh, 211. Nutt. Genera, 1. 207. Roem. & 
Schult. Syst. 6. 769. Torrey, Fl. U. 8. 380; Frem. Rep. 89. DC. Prodr. 2. 587. 
Cham. & Schlecht. in Linnea, 2. 28. Hook. Fl. Bor.-Am. 1.196. Don, Mill. 2. 562. 
Beck, Bot. 108. Torr. & Gray, Fl. 1.483. Eat. & Wr. 424. C. A. Meyer in Ru- 
precht, Beitr. Pfl. Russ. 6.44. Oakes, Hovey’s Mag. 13.217. Engelm. Pl. Upp. 
Miss. 191. Lange, Pl. Groenl. 134. Aschers. Fl. Lab. in Regensb. Flora, 45. 370. 
Hook. f. Arct. Pl. 289. Gray, Am. Journ. Sci. 3. 33. 411; Proc. Acad. Philad.: 
1863, 61; Manual, 153. Rothr. Fl. Alask. 445; Pl. Wheeler, 37. Porter, Hayd. 
Rep. 1870, 475; 1871, 481; Fl. Col. 35. Brew. & Wats. Bot. Calif. 1. 180. 
Potentilla procumbens, De Clairv. Benth. & Hook. Gen. Pl. 1. 671.  Baillon, 
Hist. Pl. 1. 371, f. 423-427. Wood, Bot. & Fl. 107. Watson, King’s Rep. 5. 89. 
SPIRZA Aruncus. Linn. Spec. 490. See syn. in Ledeb. Fl. Ross. 2. 16; 
Trautv. & Mey. Fl. Ochot. 32. [Pall. Fl. Ross. 1. 39, t. 26.] — Michx. Fl. 1. 294, 
excl. var. Poir. Dict. 7. 355. Muhl. Cat. 51. Elliott, 1. 561. Cambess. Monog. 
Spir. 48, t. 15, f. 2 (Ann. Sci. Nat. 1. 1. 374). Hook. Fl. Bor.-Am. 1. 173; Comp. 
Bot. Mag. 1.24. Bongard, Veg. Sitch. 131. Torr. & Gray, Fl. 1.417. Eat. & 
Wr. 441. Torrey, Fl. N. Y. 1. 199; Bot. Wilkes, 286. Cooper, Pac. R. Rep. 12. 59. 
Gray, Mem. Am. Acad. 6. 386; Manual, 150. Lesqx. Fl. Ark. 358. Chapman, 121. 
Rothr. Fl. Alask. 485. Hussey, Torr. Bot. Bull. 6.15. Brew. & Wats. Bot. Calif. 
1170: 
S. Aruncus, var. Americana. Persoon, 2. 46. Pursh, 343. Torrey, Fl. U. S. 
482; Ann. Lyc. N. Y. 2.194. Seringe, DC. Prodr. 2. 545. Don, Mill. 2. 520. Beck, 
Bot. 99. 
S. betulifolia. Pallas, Fl. Ross. 1. 33,t.16. See syn. in Ledeb. FI. Ross. 2. 14; 
Trautv. & Mey. 1. c. 31. — Pursh, 342. Cambess. 1. c. 34 (568), t.27. Hook. FI. 
Bor.-Am. 1. 172; Lond. Journ. Bot. 6. 217. Don, Mill. 2. 519. Torr. & Gray, Fl. 
1.414. Eat. & Wr. 441. Loud. Arb. 2. 725. Seem. Bot. Herald, 28. Richard. 
Arct. Exped. 426. Newberry, Pac. R. Rep. 6.71. Cooper, same, 12. 52. Hook. f. 
Arct. Pl. 289. Pl. Bourgeau, 256. othr. Fl. Alask. 445. Porter, Hayd. Rep. 
1871, 481. Coulter, same, 1872, 764. Gray, Proc. Am. Acad. 8. 381. Torrey, 
Bot. Wilkes, 286. Brew. & Wats. Bot. Calif. 1. 169. 
S. chamedrifolia, var. media. Pursh, 342. Cambess. 1. c. 28 (362). Seringe, DC. 
Prodr. 2. 542. Hook. Fl. Bor.-Am. 1.171. Hook. & Arn. Bot. Beechey, 123. 
S. corymbosa. Raf. Préc. Découy. 36; Desv. Journ. Bot. 1814, 168; New Flora, 
3.70. Poir. Suppl. 5. 222. Lodd. Bot. Cab. t.671. Torrey, Fl. U. S. 482. Se- 
ringe, DC. Prodr. 2. 544. Don, Mill. 2. 519. Beck, Bot. 99. Spach, Hist. Veg. 
1.438. Torr. & Gray, Fl. 1.414. Eat. & Wr. 440. Dietr. 3.126. Loud. Arb. 
2.728. Gray, Manual, 149. 
S. chamedrifolia. Cham. & Schlecht. in Linnea, 2. 2, fide same, 1. c. 6. 589. 
Eat. & Wr. 440. Richard. Arct. Exped. 426. Hook. f. Arct. Pl. 289, in part. 
S. chamedrifolia, var. B. Hook. Fl. Bor.Am. 1. 171. Hook. & Arn. Bot. 
Beechey, 123. 
S. ostryfolia & repens. Raf. New Flora, 5. 69 & 70. 
S. betulifolia, var. corymbosa. Engelm. Pl. Upp. Miss. 190. 
Var. rosea. Gray, Proc. Am. Acad. 8. 381. Coulter, Hayd. Rep. 1872, 764. 
S. ceespitosa. Nutt.; Torr. & Gray, Fl. 1.418. Walp. Rep. 2. 51. Dietr. 3. 128. 
Gray, Pl. Fendl. 40; Pl. Wright. 1. 68; Ives’s Rep. 11. Torrey, Pac. R. Rep. 4. 83; 
Mex. Bound. 63. Newberry, Pac. R. Rep. 6.71. Porter, Hayd. Rep. 1870, 475; 
1871, 481. Watson, King’s Rep. 5. 81; Pl. Wheeler, 8. Brew. & Wats. 1. c. 170. 
Var. elatior. Watson, King’s Rep. 5. 81. 
