ROSACEAE. — SIBIRAEA 455 
Spiraea Miyabei, var. pilosula Rehder, n. var. 
A typo recedit foliis basi cuneatis subtus ad costam venasque ad- 
presse villosis, supra sparsius adpresse pilosis v. fere glabris, saepius 
magis profundi inciso-serratis, calyce extus sparse piloso. 
Western Hupeh: Hsing-shan Hsien, woodlands, etc., alt. 1000- 
1600 m., June and October 1907 (No. 2756, type; bush, 1-2 m. high, 
branches arching, flowers white); same locality, June 1907 (No. 2757; 
bush, 1.25-2 m. high; flowers white); without precise locality, A. 
Henry (No. 6333). Szech'uan: south Wushan, May 1901 (Veitch 
Exped. No. 997, in part, as to the flowering specimen) ; without precise 
locality, A. Henry (No. 5628). 
This variety differs from the type chiefly in the cuneate leaves pubescent below. 
The forms with more deeply incised leaves, as No. 997 and Henry’s 5628, have 
some resemblance to S. Rosthornii Pritzel, but are easily distinguished from it by 
the short and small winter-buds, the glabrous or glabrescent branchlets, and by 
the less pubescent inflorescence. 
Here may be added the description of yet another variety based on material 
collected during the Veitch expedition: 
Spiraea Miyabei, var. tenuifolia Rehder, n. var. 7 
A typo recedit foliis majoribus ad 7 cm. longis et 3.5 cm. latis basi cuneatis, 
dor glaucescentibus, petiolis gracilioribus ad 1 cm. longis, ramulis perfecte 
retibus. 
Western Szech'uan: Mt. Omei, June 1904 (Veitch Exped. No. 4840). 
SIBIRAEA Maxim. 
Determined by ALFRED REHDER. 
Sibiraea laevigata Maximowicz in Act. Hort. Petrop. VI. 215 (1879). 
Spiraea laevigata Linnaeus, Mant. II. 244 (October 1771). — Kerner, Darstell. 
Vorzuegl. Ausl. Baeum. Gestr. 4, t. 29 (1796). — Guimpel, Otto & Hayne, 
Abbild. Holz. 113, t. 89 (1825). 
oe Laxmann, in Acad. Sci. Petrop. Comm. Nov. XV. 554, t. 29 
287 
Sibiraea altaiensis Schneider, Ill. Handb. Laubholzk. I. 486, fig. 297 e-f!, 
298 i-p (1905). 
Sibiraea laevigata, var. angustata Rehder, n. var. 
A typo recedit foliis anguste lanceolatis 3-10 em. longis et 7-15 mm. 
latis acutiusculis mucronatis, nervis minus distinctis vix eurvatis et 
praecipue inflorescentia et interdum tubo calycis breviter villosis. 
Western Szech'uan: Pan-lan-shan, west of Kuan Hsien uplands, 
alt. 4000-4500 m., June 24, 1908 (No. 2773, type; shrub, 1-1.30 m. 
