576 WILSON EXPEDITION TO CHINA 



Paulownia thyrsoidea Rehder, n. sp. 



Arbor 7-metralis, ramis robustis; ramuli hornotini villoso-hirsuti, 

 annotini glabri, griseo-brunnei, lenticellati. Folia (juniora nondum 

 matura tantum vidi) membranacea, late ovata, acuminata, basi leviter 

 cordata v. truncata v. interdum e basi rotundata abrupta lateque 

 cuneatim in petiolum protracta, remote sinuato-dentata v. sinuato- 

 lobata lobis dentibusque latissimis brevissimisque mucronatis, circiter 

 8-10(-16) cm. longa et 7-9(-14) cm. lata, obscure viridia, concoloria, 

 supra initio dense glandulosa, pilis longis hyalinis intermixtis, demum 

 glabrescentia, subtus vix glandulosa pilis brevibus hyalinis sparse 

 conspersa fasciculatis v. ramosis paucis intermixtis, ad venas densius 

 pilosa, margine pilis hyalinis ciliata; petioli 3-12 cm. longi, initio 

 dense pilis hyalinis hirsuti, glabrescentes. Inflorescentia magna, 20- 

 30 cm. longa, paniculata, deorsum axes laterales 10-18 cm. longos thyr- 

 soideos oppositos glabros v. glabrescentes gerens, sursum thyrsoidea, 

 ut axes laterales cymas breviter pedunculatas v. fere sessiles 2-3- 

 floras rarius unifloras gerens; pedicelli dense fulvo-tomentosi, 6-10 

 mm. longi, pedunculo cymarum glabrescente interdum subnullo 

 longiores; calyx turbinato-campanulatus, extus dense fulvo-tomen- 

 tosus, intus ad marginem tantum tomentosus, ceterum glaber v. fere 

 glaber, circiter 12-14 mm. longus, dentes triangulari-ovato-oblongi 

 6-9 mm. longi et 3.5-5 mm. lati, acutiusculi; corolla campanulata, 

 extus breviter pilosa et stipitato-glandulosa, violaceo-coerulea, limbo 

 bilabiato patente circiter 4 cm. diam., tubo circiter 3 cm. longo et 

 1 cm. diam., pauUo supra basim curvato et angustato intus glabro, 

 lobis rotundatis 1.5 cm. diam. intus in parte superiore breviter pilosis 

 ciliolatis; stamina breviora dimidium tubum aequantia, glabra, an- 

 theris 2 mm. longis patentibus; stylus glaber glandulis paucis basim 

 versus exceptis, staminibus brevioribus paullo longior, stigmate 

 clavato paullo incrassato; ovarium glandulosum. Capsula ovoidea, 

 leviter compressa, 2.5 longa et 14 mm. lata, locuHcida et imperfecta 

 septicida, parietibus cartilagineis fragilibus; semina nigra-brunnea, 

 ovoidea, 1 mm. longa, cum alis hyalinis basi et apice emarginatis v. 

 incisis circiter 3.5 mm. longa et 2.5 lata. 



Western Hupeh: Ichang, cultivated, alt. 40 m., April 1907 (No. 

 3171, type). Fokien : without locality, Dunn's Exped., April to June 

 1905 (Herb. Bot. Gard. Hongkong, No. 3369). 



Paulownia thyrsoidea seems most closely related to P. Fargesii Franchet which 

 differs in its much larger, white or pale colored flowers with the tula of the corolla 

 about 5 cm. long, in its more elongated, entire leaves and in the smaller inflorescence. 



