BOTANY. 



]5 



i 



1 



t.H' 



^ 



\ 



of California. It begins to flower wTien scarcely an inch high, hut at length, in good soil, attains 

 the height of a foot or more. The flowers vary greatly in size, from less than an inch to an inch 

 in diameter. They are of a bright rose color with a yellow centre. We refer here E. Muhlen- 

 bergii, Benth. PL Harhv.^ apparently a mere dwarf, small-flowered state of the plant, which we 

 have from several collectors. This species is known in California by the name o^ Cartel lo.lagua^ 

 a bitter tonic of considerable reputation ; but E. tricantha is often confounded with it^ and 

 possesses similar virtues. The same name has long been applied to E. Chilensis. Gyrandra 

 speciosa, Benth, Bot. Suljph. p, 127, t, 4:5 j differs from this species chiefly in the shorter filaments, 

 and in being more spreading. I have noticed at least in one species that the filaments increase 

 in length after flowering, as do the tube of the corolla and the style. In authentic specimens of 

 Berlandier, (whose plant is certainly annual, not as stated by Grisebach, perennial,) the stem is 

 4-angled5 as in all the species of Erythrsea, The genus Gyrandra seems to have no characters 

 by which it can be distinguished from ErythrfiBa. The segments of the calyx are somewhat cari- 

 nate, but not winged as in some genuine Erythreea. The corolla is of the same form in both 

 genera. The anthers of E. Centaurium, as well as of other species that I have examined, are 

 as destitute of a connective as are those of Gyrandra. 



ERYTHRiEA TexensiS; Griseh. Gent. p. l^^^&in DC. Prodr. L c, p. 58." Rocky places on 

 the Pecos ; Bigeloiv ; and along the Rio Grande ; Schott. April — September. 



Fl 



t. 13. E. 



JDG 



{ined.;) Torr. in Bof. 3Iarc7/s Rep. p. 291, 

 Z, c. 60. Rocky banks of the Pecos and 

 San Pedro ; Bigeloiv ^ etc. Sabina creek^ Texas ; Thurber. (No. 1662, Wright J) 



Erythrjsa tricantha, Griseh. Gent, p. 146, and in BO. Prodr. 9,_^. ^Q)Bcnfli. PI. Harfw. p, 

 322. In various parts of California, especially near the coast. We have from Sir William 

 Hooker specimens of this plant, collected by Douglas, which agree in all respects with ours. 

 The lobes of the corolla are not ^'linear and very acute,'' but lanceolate and rather obtuse. 

 Grisebach probably drew his description from specimens which were dried without pressure^ sc 

 that the lobes of the corolla had become involute and apparently very narrow as well as acute. 

 After a careful comparison of original specimens of E. tricantha and E, floribunda, (the California 

 plant o{ Bentli. PI. Hartiveg^^ I have little doubt that they are forms of one species. E. flori- 

 bunda differs only in the broader lobes of the corolla. 



Gentiana detonsa, Fries. Griseh. in BO. Prodr. 9, p. 101 ; Torr. Fl N. York, 2, p. 108, t. 82. 

 Babacomori to Santa Cruz, in wet places, September ; Thurher. {So. 1658, Wright. ) 



Gentiana affifis, Griseh. in Hook. FL Bor.-Amer. 2^ p. 57. Hills and rocky places near 



I 



the Copper Mines, August 



October; Bigelow. (No. 1657, Wright.) 



Gentiana quinqueflora^ Lam. Diet. 2, p. 643 ; Griseh. I. c. Western Texas. No. 1659, 



Wright, 



EussELiANUM, G. Bon. Gen. Svst. Gard. 4, p. 175 ; Griseh. in DC 



Valley of the Kio Grande, etc., in sandy soils ; common. May — October; Thurher. On tlie 



Gila, Sonora : Thurher. 



(E 



) Leaves varying from oblong and obtnse to 



narrowly lanceolate and acute. The flowers also vary greatly in size and in the proportionate 

 length of the segments and tube of the corolla Perhaps not distir 



Nutt 



C 



5, p. 197. Prairies on the 



■ 



Guadalupe river^ Texas, May — June ; Wright. (No. 2568, Berlandier.) 



.fc.' _;.^- • -• •<—---- 



