KOSACEJE. 221 



This variety differs from the type in having much shorter carpels, 

 nearly obsolete st} T les, and very much shorter calyx-lobes. 



Spiraea morrisonicola HAYATA (PI. XXIII.) Materials for a Flora of 

 Formosa p. 89. Shrub dwarfish glabrous. Leaves alternate, subsessile, ovate, 

 obtuse at the apex, acute at the base, or cuneate, 1} cm. long, denticulate from 

 the middle upwards, entire towards the base, veins impressed above, 

 prominent beneath. Fruits on terminal racemosely cymes. Carpels 2 mm. 

 long, shortly beaked. 



HAB. in Mt. Morrison. 



The present plant is distinguished from other species of the genus by 

 its small and glabrous form. 



Spiraea prunifolia SIEB. et Zucc. fl. simplici, MATSUM. et HAYATA 

 Enum. PL Formos. p. 119, t. 12, et HAYATA Fl. Mont. Formos. p. 78. Shrub. 

 Leaves alternate, petiolate, elliptical, 13-18 mm. long, 9-12 mm. broad, entire 

 downwards, serrulate upwards, (serrulas acute), subgla.brous or sparingly 

 pubescent above, sericeo-tomentose beneath, petioles 2-3 mm. long. Flowers 

 axillary, 5 -6- clustered, pedicels 10-15 mm. long, pubescent. Flowers when 

 opened 8 mm. in diameter. Calyx persistent ; tube nrceolately campanulate 

 5-lobed at the middle, lobes ovate, acute. Petals 5, inserted on the mouth of 

 the calyx, orbicular, shortly clawed, slightly emargiuate at the apex. Stamens 

 oo, nearly 20, 2-seriately inserted at the throat of the calyx, filaments 

 glabrous, base 2-glanduliferous, anthers 2-celled, introrse. Disc cariiose, 

 tomentose, adnate to the calyx-tube. Carpels 5, inserted at the base of the 

 calyx, shortly stipitate, free, styles subtermiual subgeniculate, stigmas capi- 

 tate. Ovary 1-celled, ovules co . Carpels when matured coriaceous dehi- 

 scing by the ventral suture. Seeds pendulous, linear. 



HAB. Mt. Morrison. Nanto : Hinokiyama. Toroku, Kureikyakn, Piiii- 

 kiho. 



DISTBIB. China throughout, Japan and Corea. 



The original description in " SIEB. et Zucc. Fl. Jap. p. 131' is written 

 from a plant with double flowers which is very common in Japan proper. 

 No specimen with simple flowers has ever teen represented here at Tokyo. 



