APOCYNACEAE. 
Determined by CAMILLO SCHNEIDER. 
MELODINUS Forst. 
Melodinus Hemsleyanus Diels in Bot. Jahrb. XXIX. 539 (1900). 
Melodinus? sp. nov. Hemsley in Jour. Linn. Soc. XXVI. 94 (1889). 
Eastern Szech'uan: Taning Hsien, alt. 650 m., July 1910 (No. 
4563; climber over rocks, 1.5-3 m. long, flowers white); Mt. Omei, 
July 1904 (Veitch Exped. No.5070; climber). SouthernSzech'uan: 
“Nanch’uan, ‘Kung chia p’ing,’ Felswünde, August," A. von Rost- 
horn (No. 511, type). 
This species may be distinguished by the small and sometimes indistinct scales 
at the mouth of the corolla. It is closely related to the following species. 
Here may be added the description of another species not collected during the 
Arnold Arboretum Expeditions. 
, Melodinus Seguini Léveillé in Fedde, Rep. Spec. Nov. II. 114 (descriptio satis 
incorrecta) (1906), fide specim. originalis; Fl. Kouy-Tchéou, 30 (1914). 
Frutex ad 1 m. altus; ramuli hornotini distincte, annotini laxius breviter villosuli 
v. fere tomentosi, cinereo-brunnescentes. Folia subcoriacea, ovato-oblonga v. 
elliptico-oblonga, basi rotundata, brevissime acutata, apicem versus sensim v. 
abruptius acuminata, integra, 5-11 em. longa, 2.5-5.5cm. lata, supra viridia, lucida, 
In nervis et costa impressa densius, in facie sparse griseo-villosula, subtus pallidiora, 
molliter pubescenti-villosula, nervis lateralibus utrinsecus circiter 10 patentibus 
paulo prominulis costa distincte prominente; petioli superne sulcati, dense breviter 
osuli, 6-8 mm. longi. Inflorescentia pro sectione normalis, axibus calycibus 
alabastris modoramulorum pilosis; pedicelli versus apicem bracteolis2 ovato-lanceo- 
latis instructi, 1-1.3 m. longi; calycis segmenta ovato-lanceolata, acuta, sublibera, 
subimbricata, plus minusve appressa, circiter 6 mm. longa; corolla alba, pro genere 
normalis; tubus extus breviter tomentellus, circiter 1.6-1.9 em. longus, 1.5 mm. 
crassus, sub faucem paulo angustatus, intus sparse puberulus; lobi circiter 1.4 cm. 
longi et 5-6 mm. lati, oblanceolati, obtusi, margine interiore paulo supra basim 
plus minusve irregulariter cristato-undulato, extus in partibus in alabastro non in- 
flatis nudi, intus glabri v. sub microscopio minime puberuli, ad faucem lobulis lineari- 
bus puberulis circiter 2 mm. longis paracorollam irregularem formantibus instructi; 
Stamina 5 versus basim tubo inserta gynaeceumque glabra, pro genere normalia; 
stigmata apice breviter bifida; stylus calycem subaequans; fructus ignoti. se 
Kweichou: “cascade de Hoangko-Chou sur les rochers, 9 juin 1898,” J. Se- 
guin (No. 2390, type). Kwangsi: Lungchou, H. B. Morse (No. 171 — shrub 
1 m. tall, flowers white; ex collectione A. Henry). 
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