. SAXIFEAGE.I:. 109 



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

 supra planis deoi-sum 1 mm. latis subtus elevatis, venis primariis tenuibus 

 utroque latere costse 5-6 elevatis^ petiolis 8 mm. longis. Cymse pseudoumbel- 

 latse, sessiles, radiis 5, 3 cm. longis, pseudoumbellulis (cymuHs) multifloratis. 

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

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

 integra vel repanda basi ± unguiculata yel subito cuneata multi-nervia, nervis 

 supra basin convergentibus, venulis tenuibus reticulatis. Flores fertiles : 

 pedicelli J cm. longi t^nuiter pubescentes ; calycis tubus obeonicus 1^ mm. 

 lougus 3 mm. latus, lobis 5 oblongo-triangulaiibus f 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 -} mm. lata. Stamina 10, filamentis complanatis, 

 antheris ovato-ob longis 1-1^ mm. longis. Ovarium semi-inferius, stylis 3 

 subrectis IJ mm. longis. 



Hab. Kokei, leg. S. Nagasawa, Aprili. 1903. 



Near H. cMnensis, but differs from it by the quite glabrous snbentire 

 leaves and much larger flowers. 



Hydrangea obovatifolia Hayata sp. nov. Rami cinerascentes sub- 

 recti, ramulis novellis rubro-purpurascentibus. Folia coriacea obovata 5-5J 

 cm. longa 2^-3 cm. lata apice triangulari-acuta basi obtusa margine supra 

 basin usque ad infra apicem remote minuteque seiTulata, (serrulis mucroni- 

 formibus ^ 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 costsB 4-5 a costa 

 angulo 50° egressis, sursum arcutatis, venulis non conspicuis) facie supra 

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

 anguste alatis basi ± dilatatis. CymaB subumbellatse 4 cm. longse 7-6 cm. 

 lataB basi bracteis multiserratis suffultse, (bracteis caducissimis oblongo- 

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

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

 (pedicellis 1^ cm. longis) in cymula singula unus ; sepala 4, valde insequalia 



