386 BULLETIN DE L' HERBIER BOISSIER. (21) 



triloba, supra viridis, subtus glaucescens, triplinervis vel quintuplinervis, 

 utraque facie nervis raris divergentibus pallidis lineata, subtus praeterea 

 venis saturalius tinctis obscure reticulata, inter lobos laterales cuneatim 

 in petiolum extenuata, lobo intermedio multo maiore, late ovato, acumi- 

 nato, conspicue mucronato (in foliis inflmis nonnunquam obtuso, emar- 

 ginato), lobis lateralibus transverse distantibus, obtruncatis, subbilobis, 

 lobulis subsequalihus vel altero minore, obtusis vel acutiusculis ; pedun- 

 culus petiolo longior, uniflorus, gracilis, teres, basi tenuis, apicem 

 versus sensim incrassatus, apice bracteis decurrentibus angulatus, pallide 

 viridis; bractese 2 magnae, late ovata3, acutae, mucronulatae, calycem 

 (multo breviorem) prorsus involucranles, parum inflatae, obscure carinata3, 

 herbaceae, pallide virides, margine violascentes, obscure reticulato-venosee; 

 corolla forma, magnitudine, colore ut in C. sepium (L.) aut. non R. Br. ; 

 antherse, pollen, Stigmata ul in C. sepium aut. — Inter hanc et 

 C. subacaulem Hook, et Arn. intermedia. 



Rami usque 3 dm. longi, internodiis inferioribus usque 8 cm. longis; petioli 

 et pedunculi usque 8 cm. longi ; lamina usque ultra 6 cm. longa, ultra 7 cm. 

 lata, lobo intermedio usque 4 cm. longo, basi 4 cm. lato, lateralibus usque 2 cm. 

 longis, 15 mm. latis; bracteae 23 mm. longae, ultra 15 mm. latae; corolla 

 5 cm. longa. 



Oregon (Howell, H. Ber., Boiss., DC, Del.); Washington, Mount 

 Paddo (Adams) : W. N. Suksdorf 14. VII. 1886, n° 183 unter dem Namen 

 Comolmlus sepium L., H. Mon. 



5. Ipomœa (§. Pharbitis) decasperma sp. n. (t. XIV). 



Specim. herb. Boiss. : Herba e radice magna, crassa, luberosa, nigra 

 perennis, gracilis, volubilis; caulis brevissimus, apice pluriramosus, 

 ramis longissimis, simplicibus, ten'uibus, teretibus, sicut petioli, foliorum 

 faciès infera, pedunculi, sepalorum facies externa appresse hirsutis, inter- 

 nodiis longis ; petiolus longus, tenuis, ereclo-patens ; lamina in petioli 

 apice extrorsum declinata, maiuscula, herbacea, hastato-3-loba vel lobis 

 basalibus nonnunquam iterum bifidis sub-5-loba, supra lobos basales (sub- 

 patentes oblique divergentes) pandurato-constricta, apice sensim in acu- 

 men acutum mucronulatum extenuata, basi profunde et anguste sinuata, 

 supra viridis, pilis raris secus nervös densiorihus appressis parce hirsuta, 

 glabrescens, subtus densius hirsuta, pallidior vel nonnunquam violascens, 

 reliculato-venosa, pinninervis, nervis lateralibus basalibus densioribus, 

 infimis 2 in lobos basales recurvis, pinnatiramosis, ceteris angulo acuto 



