SAXIFRAGE.E. 109 



longis a se 7 mm. remotis, utraque pagine glabra subtus pallidiora, costis 

 supra planis deorsum 1 mm. latis snbtiis elevatis, venis primariis tenuibus 

 utroque latere costse 5-6 elevatis, petiolis 8 mm. lougis. Cymse pseudoumbel- 

 late, sessiles, radiis 5, 3 cm. longis, pseudoumbellulis (cymulis) multifloratis. 

 Fl. marginalis sterilis in cymula singula unus, pedicellis 2 cm. longis ; sepala 4 

 obovato-orbicularia insequalia, majora 27mm. longa 23 mm. lata margine sub- 

 integva vel repanda basi unguicnlata vel subito cuneata multi-nervia, nervis 

 supra basin convergentibus, venulis tenuibus reticulatis. Flores fertiles : 

 pedicelli ^ cm. longi tenuiter pubescentes ; caljcis ttibus obconicus 1^ mm. 

 longus 3 mm. latus, lobis 5 oblongo-triangularibus $ mm longis mm. latis 

 obtusis basi non contractis 1 mm. a se remotis ; petala 5, obovato-oblonga 

 3 mm. longa 2 mm. lata apice breve obtuseque cuspidata vel obtusa basi 

 breve cuneata ad basin -J mm. lata. Stamina 10, filamentis complanatis, 

 antheris ovato-oblongis l-l mm. longis. Ovarium semi-inferius, stylis 3 

 subrectis 1^ mm. longis. 



HAB. Kokei, leg. S. NAGASAWA, Aprili. 1903. 



Near H. cJiinensis, but differs from it by the quite glabrous subentire 

 leaves and much larger flowers. 



Hydrangea obovatifolia HAYATA sp. nov. Kami cinerascentes sub- 

 recti, ramulis novellis rabro-purpurascentibus. Folia coriacea obovata 5-5^ 

 cm. longa 2 J-3 cm. lata apice triaugulari-acuta basi obtusa margine supra 

 basin usque ad infra apicem remote minuteque serrulata, (senailis mucroni- 

 forrnibus ^ mm. longis 5-6 mm. a se remotis), prope basin et apicem integra 

 supra viridia subtus pallidissima, (costis impressis, venis supra planis, subtus 

 costis elevatis, venis primariis elevatis utroque latere costse 4-5 a costa 

 angulo 50 egi-essis, sursum arcutatis, venulis non conspicuis) facie supia 

 plana subtus in exsiccato elevato-punctata, petiolis 1 cm. longis supra sulcatis 

 anguste alatis basi dilatatis. Cymse subumbellatae 4 cm. longse 7-6 cm. 

 latse basi bracteis multiserratis suffultse, (bracteis caducissimis oblongo- 

 triangularibus 3-4 mm. longis 2 mm. latis dorso costatis), sessiles, radiis 5, 

 3 cm. longis, pseudo-umbellulis (cymulis) oo-floratis. Flos marginalis sterilis 

 (pedicellis li cm. longis) in cymula singula unus ; sepala 4, valde insequalia 



