372 PROCEEDINGS OF THE AMERICAN ACADEMY 



Phelip^a erianthera, Engelm. MSS. (Orobanche multijlora 

 Nutt. PL Gamb. p. 179, ex char.): P. Ludoviciance peraffinis ; floribus 

 majoribus ; antheris crassioribus maxime lanigeris ; calycis segmentis 

 viilgo gracilioribus. — New Mexico, Fendler (585), Wright (1449, 

 anthers less woolly), J. M. Bigelow, Parry (147, coll. 1867) ; Pacliitiga, 

 Chihuahua, Thurber, cited in Bot. Mex. Bound. Survey as P. Ludo- 

 viciana. Apparently a quite distinct species, but the woolliness of the 

 anthers must not be too implicitly relied on. 



* ANTIRRHINUM, Tourn. 



On a survey of our North American species, which in California 

 are now rather numerous, it seems inevitable that Antirrhinum should 

 include the personate species of Maurandia, also Nuttall's Gambelia. 

 I propose the following arrangement : — 



§ 1. Orontium, Benth. — I have seen no indigenous species. 



A. CYATHiFERUM, Benth., by the description, and still more by the 

 figure, has a rather prominent palate to the ringent corolla. 



A. CONFERTIFLORUJI, Benth., from Coultei-'s collection, I suspect to 

 be Mohavea viscida, which is No. 616, in fruit only, in Coulter's Cali- 

 fornian collection. 



§ 2. S^RORHiNUM. Corolla palato prominente extruso faucem 

 baud vel vix claudente. Filamenta apice pi. m. dilatata. Capsula 

 infequalis. Seraina Antirrhinastri. — Herbae annuae, Californicae, ple- 

 rumque alternifoliae, nunc strictfe, nunc ditFusse et ramulos filifbrmes 

 saepe prehensiles proferentes. Pedicelli breves vel subnulli. Flores 

 ssepissime parvi. 



A. glandulosum and A. Virga are the species in which the palate is 

 most appressed to the upper lip. In the diffuse species the corolla 

 more and more approaches that of the following section. Their slender 

 branchlets, mostly produced from the same axil with a flower, are 

 evidently sensitive to contact in the same manner as the petioles and 

 peduncles of Maurandia. In specimens of A. vagans and A. Breweri 

 they are not rarely found with one or two close turns around some 

 slender object, and the coil thickened and hardened in the manner of 

 most petiole-climbers. The similar twining branches of the erect and 

 spicate A. Cuulterianum have been noticed by Dr. Parry or Prof. 

 Thurber. A case of special interest, as a step in the transition from 

 leafy branch to tendril, occurring in a genus of which some species do 

 not climb at all, while others climb by tendril-like petioles and pedun- 

 cles. 



