PITTOSPORACEAE. — PITTOSPORUM 329 



This is a very common shrub on the cHffs at low altitudes in western Hupeh and 

 eastern Szech'uan, where it is known colloquially as Ai-hua-tzQ. The typical form, 

 ■with rhombic-obovate leaves attenuate at the base and often abruptly caudate- 

 acuminate, is very well marked, but some specimens approach P. heterophyllum 

 Franchet, and it may be that these species are not really distinct. Henry's specimens 

 were distributed by the Kew herbarium as doubtful forms of P. pauciflorurn Hooker 

 & Arnott, but they are not this species, which is characterized by its few-flowered 

 umbellate inflorescence, its oblong acute sepals and by its fruit, which is three times 

 the size of that of P. truncatum. On E. Pritzel's type the leaves are somewhat 

 malformed, but such leaves may often be found on specimens, as on Henry No. 

 5513. Gagnepain clearly defines the difference between this and P. pauciflorum 

 Hooker & Amott, but in taking up Oliver's varietal name he unfortunately over- 

 looked that given by E. Pritzel. 



Pittosporum heterophyllum Franchet in Bull. Soc. Bot. France, 

 XXXIII. 415 (1886); PI. Delavay. 76, t. 18 (1889). — Dials in Not. 

 Bot. Gard. Edinburgh, VII. 30, 95 {PI. Chin. Forrest.) (1912). 



Western Szech'uan : Wen-ch'uan Hsien, valley of Min River, alt. 

 1000-1300 m., July and October 1908 (No. 1146; bush 1-1.5 m., 

 flowers yellow); Yachou Fu, thickets, alt. 330-600 m., November 

 1908 (No. 3179; bush 1 m. high); without precise locality, cliffs, alt. 

 2000-3500 m., May, June 1904 (Veitch Exped. Nos. 3229, 3232). 

 Yunnan: Lichiang Range, alt. 2800 m., May 1906, G. Forrest (No. 

 2084). 



This pretty species is common on cUffs and in rocky places generally in the warm 

 and arid valleys of western Szech'uan. The leaves are heteromorphic, but on 

 some specimens they are rather similar in shape to those of P. truncatum Pritzel. 



Pittosporum saxicola Rehder & Wilson, n. sp. 



Frutex 0.3-2 m. altus, saepe prostratus; ramuli graciles, teretes, 

 flavo- V. brunneo-cinerei, hornotini puberuli. Folia persistentia, coria- 

 cea, oblonga v. anguste elliptico-oblonga, obtusa, mucronata, basi 

 cuneata v. attenuata, margine revoluta interdum leviter crenulata, 

 1-5, pleraque 2-3.5 cm. longa, et 0.3-0.9 cm. lata, glabra, supra niti- 

 dula, intense viridia, subtus pallidiora, nervis utrinsecus 4-8 supra 

 ut costa leviter impressa subtus leviter elevatis; petioli 1-5 mm. longi, 

 marginati. Flores lutei, fragrantes, solitarii v. plures in cymis 

 umbelliformibus ramulos breves terminantibus; pedicelli 3-8 mm. 

 longi, puberuli; bracteae membranaceae, lanceolatae, 1-2 mm. longae, 

 caducae; sepala libera v. fere libera, ovata, acuta v. obtusa, 2-2.5 mm. 

 longa, glanduloso-ciliolata; corolla tubuloso-campanulata, 7-8 mm. 

 longa, petalis oblongis 2-2.5 mm. latis coherentibus et tubum for- 

 mantibus, parte libera patente tubum dimidium subaequante; stamina 

 petalis breviora sed tubum superantia, filamentis subulatis 4-4.5 



