268 WILSON EXPEDITION TO CHINA 
breviter acuminata, supra saturate viridia, in costa nervisque paulo 
impressis sparse pilosa, in facie pilis adpressis sparse obtecta, scabrius- 
cula, subtus in costa nervisque elevatis satis hirtella (nervis lateralibus 
a costa exeuntibus utrinsecus basalibus 2 inclusis 3-5 inter se paralleli- 
bus), vix barbata, nervillis leviter prominulis sparse hirtellis reticu- 
lata, etiam in facie pilis minimis difficile recognoscendis saepe brunnes- 
centibus glandulosis plus minusve instructa, discoloria, in sicco ci- 
nereo-brunnescentia, margine tantum ultra medium distincte regulariter 
subcrenato-serrata, 6-10 em. longa, 2.5-5 cm. lata (juniora in No. 
2318 tenuia, subtus flavescentia, aeque pilosa, nondum reticulata, pro 
parte late ovato-rhomboidea et tantum 8 cm. longa et 5 cm. lata); 
petioli 5-8 mm. longi, crassi, tomentelli, superne sulcati. Flores ignoti 
(sed vide infra!). Fructus maturi plerique bini v. terni, pedicellis 6-8 
mm. longis tomentellis suffulti, aurantiaci, ut videtur globosi, circiter 
7-8 mm. crassi, glabri; putamina subglobosa, hilo lato obtuse rectan- 
gulari distincte foveolata, ceterum exigue v. vix foveolata et costata, 
circiter 5 mm. crassa. 
Western Hupeh: Changyang Hsien, alt. 900-1300 m., October 
1907 (No. 444, type; fruits orange, branchlets articulating; tree 12-17 
m. tall, girth 0.9-1.8 m.; with ripe fruits); Patung Hsien, alt. 900- 
1300 m., October 1907 (No. 444°; same as No. 444); Ichang, not 
common, alt. 1-300 m., April 1907 (No. 2318; tree 7 m. tall, girth 
0.9 m.; with well-developed young leaves and very young fruits); 
same locality, A. Henry (No. 3404; with young leaves and fruits, very 
similar to No. 2318, but all leaves oblong-elliptic). 
This is a very interesting species on account of its throwing off the fruit-bearing 
branchlets. It seems to be very closely related to C. cercidifolia Schneider (p. 276), 
and it needs further investigation to decide if that species may not represent only à 
variety of C. labilis. The types, however, look very different, but there are forms 
like Wilson's Nos. 2318 and 1761* which seem to connect the two species. There 
are young plants growing in the Arnold Arboretum raised from seed, sent by Wil- 
son under No. 444, the branchlets of which are covered with a very dense yellowish 
and rough pubescence. The leaves are more hairy than in the fruiting type and 
have a more copious and more crenate dentation, but they are ovate-oblong like 
those of old plants. 
There is a flowering specimen of Henry’s (No. 7866 in the herbarium of the 
Arnold Arboretum from Hupeh without precise locality), which may belong to C. 
labilis, but the flowers are very much alike in the different species of this genus. © 
No. 7866 I add the following description: Ramuli annotini vetustioresque ut in 
forma typica, novelli floriferi 3—4 cm. longi, flavo-tomentosi, foliis valde juvenilibus 
1-1.5 em. longis oblongis acuminatis supra laxius subtus densius ut ramuli pilosis 
praediti. Inflorescentiae œ’ basi ramulorum axillares, fasciculato-cy ; flores 
plerique 4-meri; perigonii lobi ovato-oblongi, margine ciliati, ceterum glabri, extus 
leviter rubescentes; stamina normalia, juvenilia lobis aequilonga, disco piloso in- 
