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116 



CONTKIBUTTONS FROil THE NATIO^TAL HERBAKIUM. 





1- 



._h 



Type U. S. National 1 lerbariuui no. 3022-10, collected by J. N. Rose on road between 

 Eosario and Concepcion, Sinaloa, July 27, 1897 (no. 3205). 



Lotoxalis pentantha (Jacq.) Rose. 



Oxalls pentanfha, Jac^q. Oxah 21. jjJ. L 1704. 



L 

 ■ 



Lotoxalis psilotricha (Turcz.) Rose. 



Oxalispsilotrlcha Turcz. I'-uU. Soc. Nat. :\Iosc. 31': 428. 1858. 



Lotoxalis tephrodes (Tunz.) Rose. 



O.valis tephrodes Tmcz. Bull. Soc. Nat. Muac. 31: 428. 1858. 



Lotoxalis yucatanensis Rose, sp. novi 



Ten to 30 cm. hi^^ii, erect, woody tliroughout; yomig parts with ascen.ling some- 

 wliat appressed pubcacence; leaflets 3, the teriuiual retnote, oblong to orbicular, thin 

 (in herbarium speeiniensi), mostly rounded at base, usually strongly emarginate, but 

 the tips unetiual, nearly glabrous, 5 t(i 15 mm. long; inflorescence of 5 to 7 flowers, 

 dicliotomous with central flower solitary, compact, the pedicels jointed above the 

 base; sepals ovate, obtuse, 3 mm. long, nerveci, glabrous or nearly so; corolla yellow; 

 5 longer filaments hairy; capsule orl>icular{?), glabrous on the angles. 



TypeT. S. National Herbarium no. 26841!) (Gaumer no. 715). 



Specimens exanuticd: 



Yucatan, Schott, 1865 (no. 625); G. F. Gaumer, 1895 (no. 715); C. F. Mills- 



paugh, 18<)9 (no. 1633). 

 This species has heretofore jnissed under the name of L. hcrlandkri, but differs in 

 its more erect shrubby habit and glabrous cai)sules, in the character of its inflores- 

 cence, etc. It is apparently confin(Hl to Yucatan. 



RESTORATION OF BIOPHYTUM. « 



This geim« was established by DeCandolle in 182-1:, based upon two 

 species fonuerly referred to Oxalis. It was shortly afterwards 

 returned to Oxalis whore it rcuiained for the next half-century. Gar- 

 deners, however, usually kept it out of Oxalis on account of its very 

 peculiar habit. Don and Nickelson both recognize Biophytum. 

 Durand takes it up in 1888 and so does R. Recche in Engler and 



PrantTs late work. 



Otto Kuntze takes up for this genus the pre-Linnaean name Todda- 



vaddi (1742). 



About twenty species have been recognized, but only the following 



is known to grow in Mexico. 



Biophytum dendroides (H. B. K.) DC. Prod. 1: 690. 1824. 

 Oxalis dendroidcs II. B. K. Nov. Gen. <k Sp. 5: 250. 1823. 

 Toddaraddi dendvoides Knnt/.e, liev. Gen. PI. 1: 96. 1891. 



Sperimcn examhied: 



Vera Cruz: T.arranca of Chavarreillo, C. G. Pringle, 1899 (no. Sl()5). 



PSEUDOXALIS, A NEW GENUS. 



Pseudoxalis gen. nov. 



Probably perennial, caulescent from slender running rootstocks; leaves alternate; 



stipules wanting; leatiets 3, palmate, sessile; peduncles 1 or 2-flowercd; sepals 5, 



broad, thin, petaloid, much longer than the petals; petals small, yellow. 



Perhaps nearest Xanthoxalis, from which it differs e.specially in its small corolla 



and large petaloid sepals. AVhen OxnUx madrew^ii* was first described it was compared 



■ 111 fc r^^^^M w 



"BioPHVTrM DC. Prod. 1: 689. 1824. 



