203 



POLYGALEiE. 



Polygala verticillata L. Reno Comity, Kans. Alkali spots. July. No. 286. 

 Krameria secundiflora DC. OkbiUoina; also Morton County, Kaus. July. No. 

 173. 



CARYOPHYLLEiE. 



Silene antirrhina L. Gutlirie. Okla. May. i\o. lt.5. 



Cerastium lautans Raf. Vinita. Prairies. April. No. 10. 



This plant is doubtfully referred here aa a small lorra of this species. Its 

 reliexed pedicels are longer tliau the sepals, as are the petals. It is the same as 

 Jenny's No. 134 from Gillespie County, Tex., and Dr. Palmer's No. 30, collected in 

 the ludian Territory in 1868. Tliis form, so far as the tliree collections show, grows 

 only 3 to 5 inches high. The younger plants are simple, erect, with 3 to 5 pairs 

 of leaves below the branching inflorescence, while the older plants branch at 

 the base. 



Stellarla Nxittallii Torr. and Gray. Okmnlgee. Woods. April. No. 96. 



Arenaria Pitcheri Nutt. Muscogee. April. No. 69. 



Sagina decumbens Torr. and Gray. Vinita. Prairies. April. No. 12. 



PORTULACEiE. 



Portulaca pilosa L. Dallas County, Tex; August. No. 399. 



Talinum calycinum Engelm.^ Cheyenne country. June. No. 185. 



Talinum parviflorum Nutt. Hartley Couuty, Tex. In sand. August. No. 403, 



Claytouia Virginica L. Vinita. April. No. 1. 



MALVACEiB. 



Callirrhoe involucrata Gray. Neutral Stri]); North Canadian River. August. 



No. 338. 

 Callirrhoe pedata Gray. Cimarron Valley. June. No. 226. 

 Malvastrum angustiim Gray. Reno County, Kans. July. No. 288. 

 Malvastrum coccineum Gray. Comanche Couuty, Kans. Juno. No. 238. 

 Hibiscus lasiocarpu,s Cav. Hemphill and Moore counties, Tex. August. Nos. 



426, 436. 



LINEiE. 



Linum Berlandieri Hook. Oklahoma City. May. No. 128. 



Linum perenne L., var. Lewisii Eaton and Wright. Cheyenne country. Juno. 



No. 192. 

 liinum sulcatum Riddel] . Black Bear Creek, Cherokee Outlet. September. No. 



481. 



ZYGOPHYLLEiE. 



Tribulus maximus L. Upper Cimarron. Becoming a noxious weed in cultivated 

 ground. July. No. 362. 



1 Tbia species and T. teretifoUum look very mucli .iliko. AVhen in flower they can be separated by 

 the number of stameus, T. cahjcinum Ijaving 30, T. teretifolluni 1!0. In fruit the 8epa».ition is more 

 difficult. The only iangiblc distiucticn tliat I could make out is in tlte duration of the sepals, which 

 fall with the corolla in T. teretifvlium, but are somewhat persistent after the corolla falls in T. caly- 

 einum. The sepala are also produced below the point of insertion in T. calycinum and not pro- 

 duced in T. teretifoUum. Coherently strtted, the matter stands thus: 



1. Talinum calycinum baa 30 or more stamoua, baa sepals peraistont after the corolla falls, and haa 

 them produced below the point of insertiou. 



2. Talinum tercifolium has 20 stamens; its sepals fall with the corolla and are not produced hhlow 

 the point of insertion. 



