L16 CONTRIBUTIONS I ■"i:«»M THE NATIONAL HERBARIUM. 



Type i . B. National Herbarium no. 3< »__ 10, collected by J, N". Rose on road between 

 o and Concepci6n, Binaloa, July 27, i s '<: qo. 32l 



Lotoxalia pentantha Jacq Rose. 



Oralis pentantha, Jacq. Oxal. 21. pi /. 1794. 



Lotoxalia pailotricha Turc 



Oxalispsilotricha Turcz. Bull. Soc. Nat Moec. 31 1 : 128. 1- 



Lotoxalis tephrodes (Turcz.) Rose. 



alis tephrodes Turcz. Bull. Soc. Nat. Mosc. 31: 128. Lfi 



Lotoxalia yucatanenaia Rose, Bp. nov. 



Ten to 30 cm. high, erect, woody throughout; young parte with ascending some- 

 wliat appressed pubescence; leaflets 3, the terminal remote, oblong to orbicular, thin 

 (in herbarium specimens . mostly rounded at base, usually Btrongly emarginate, but 

 the tips unequal, nearly glabrous, 5 t i 15 nun. long; inflorescence of 5 to 7 flowers, 

 dichotomous with central (lower solitary, compact, the pedicels jointed above the 

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

 5 longer filaments hairy; capsule orbicular (?) , glabrous on the angL 



Type U. S. National Herbarium no. 268419 Gaumerno. 715 . 

 Sjn cirm ns examim d: 



Yucatan. Schott, 1865 (no. 625); G. 1". Gaumer, L895 (no. 715); 0. F. Mills- 

 paugh, L899 i no. 1633). 



This species has heretofore passed under the name of /.. berlandieri, bul differs in 

 it- in- .re erect Bhrubby habit and glabrous capsules, in 1 1n- character of its inflores- 

 cence, etc. it is apparently confined to Yucatan. 



RESTORATION OF BIOPHYTUM. ' 



This genus was established by DeCandolle in L824, based upon two 

 species formerly referred to Oxalis. It was shortly afterwards 

 returned to Oxalis where it remained for the 4 next half-century. Gar 

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

 peculiar habit. Don and Nickelson both recognize Biophytum. 

 Durand take- it up in L888 and so does R. Reeche in Bungler and 

 Prantl's late work. 



Otto Kunt/e takes up for this genus the pre-Linnaean name Todda- 

 vaddi (1742). 



About twenty species have been recognized, but only the following 

 LS known to grow in Mexico. 



Biophytum dendroides i II. B. K.) DC. Prod. 1: 690. 1824. 



Oxalis dendroides II. J'>. K. Nov. Gen. iV: Sp. 5: 250. L823. 



Toddavaddi dendroides Kuntze, Rev. Gen. PI. 1:96. L891. 

 Specmu a examined: 



Vera Cruz: Barranca of Chavarreillo, C. <;. Pringle, L899 (no. 8165). 



PSEUDOXALIS, A NEW GENUS. 



Pseudoxalis gen. nov. 



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

 stipules wanting; Leaflets •*'>. palmate, sessile; peduncles I or 2-flowered; sepals 5, 

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



Perhaps nearest Kanthoxalis, from which it differs especially in its small corolla 

 ami large petaloid sepals. When Oxalis madrensis was first described it was compared 



a Blown M m DC. Prod. 1: 689. 1824. 



