34 PROCEEDINGS OF THE AMERICAN ACADEMY 



(137, was referred to //. oocliniurn) : a well-marked and apparently 

 always rayless species. 



Gaillardia Mexicana. Primo intuitu G. lanceolatoe sat similis, 

 sed microcepliala, Immilior ; radice perenni ; involucro basi calloso ; 

 cprollis disci dentibus brevi-oblongis obtusis ; villis achenii parcioribus ; 

 fimbrillis receptaculi perphirimis setiformibus achenio cum pappo suo 

 ada^(juantibus. — Nortbern Mexico, Palmer, in tlie Sierra Madre. soutli 

 of Saltillo, no. 725 ; also in a dwarf and subcaulescent form at Lerios, 

 in tlie mountains east of Saltillo, no. 726. Collected in tlie same 

 region, but witbout tbe root, by Gregg, no. 113, 160, also in the 

 mountains near San Luis Potosi, by Scbaffner, Sept., 1876, no. 259. 

 Moreover it is no. 374 of coll. C. Wrifj/it, m 1849, on tbe Rio Frio, 

 in S. W. Texas, which was wrongly referred to G. pulchella. 



Gaillardia comosa. G. slmplici, Scheele, affinis (§ Guntheria, 

 Arjassizia, Gray & Engelm.), bumilis; Ibliis omnibus radicalibus 1-2- 

 pinnatipartitis vel paucis laciniatis ; scapo spitliamaio ; involucro tri- 

 seriali parvulo ; ligulis breviusculis fertilibus ; acbeniis longissime 

 denseque villosissimis, villis pappi paleas oblongo-lanceolatas costa 

 breviter excurrente aristulatas coroUam disci suba^quantes fere tegen- 

 tibus; receptaculi fimbrillis brevissimis mollibus. — Northern Mexico, 

 near Saltillo, April, 1880, no. 721, Palmer. The long villi of the 

 achenium are found to be inserted over its whole surface in G. simplex 

 and G. pinnatijida no less than in the present species, in which they 

 so abound as to form a dense pellet. 



Sartavellia Mexicana. Foliis angustissime linearibus ; pappo 

 e paleis 4-5 angusto-oblongis apice truncato fimbriolatis cum aristis 

 alternantibus gracillimis longioribus, omnibus imabasi tantum connatis. 

 — Northern Mexico, near Monclova and San Lorenzo de Laguna, 

 south of Parras, Palmer, 683, 687. A very interesting accession to 

 a genus which was supposed to be monotj'pic. The pappus is as if 

 the cupule of S. Flaverm were resolved into four or five palea?, with 



disci Imiid siiperantibus. — Grassy slopes of tiie Mogollon Mountains, New 



Mexico, //. 11. Rushy, Sept., 1881. 



•t- ■*- Simplex vel subsimplex e caudicc pprenni, monocepbala ; foliis angus- 

 tissime liiioarihiis rigidulis fere semper integcrrimis im|)unetatis ; involucro 

 utroqiie 12-14-piiyllo consimili, vel iiiterno e bracteis niagis atteiiuatoacumi- 

 natis, iis externi inia basi pannn connatis ; pappi paleis circa 10 subulato 

 lancoolatis sensim aristalo-acuminatis corollam disci fere a?quantibus. 

 A. Bif;i:i,ovii, Gray, PI. Wrigbt. ii. 97, & Bot. Mex. Bound. 99. — New 



Mexico, first coll. by Dr. Dij/flow. Connects Ilijmenoxi/s with Euaclinella, and 



with tiie section Dugaldea of Jleknium. 



