OF A.RTS AND SCIENCES. 203 



gracillimis ; stipulis parvis nudis ; foliis Hneari-filiformibus (semipolli- 

 caribus) 2:)edunculis sparsis gracilibus adscendeiitibus (nunc pollicari- 

 bus) brevioribus vel ajquilongis ; calycis lobis subulatis tubo sa^pius 

 2-3-plo longioribus ; corolla (purpurea) liypocraterimorpha, lobis 

 intus crebre albo-puberulis tubo dimidio brevioribus ; stminibus paucis 

 turgidis circumscriptione rotundis. — Coalmila, Mexico, in the moun- 

 tains east and south of Sattillo, Palmer, 1880, no. 397, 398. 



IIousTONiA (Ereicotis) fasciculata. Fruticosa, ullrapedalls, 

 ramosissima ; ramis rigidis foliosis*, junioribus tetragonis hirtello- 

 puberulis ; stipulis brevissimis scariosis sa^pius biacuminatis ; foliis 

 lariciformibus vel subulato-linearibus rigidulis glabris (lin. 4-3-1- 

 longis) internodio parum brevioribus et in axillis plerumque copiosis ; 

 cymulis paucifloris ; floribus parvis (lin. 2 longis) brevi-pedicellatis ; 

 corolla3 tubo calycis lobis obtusiusculis subduplo et lobis suis parum 

 longioribus ; capsula ovali ab apice libero integro loculicida ; semini- 

 bus in loculis 4-5 majusculis elongato-oblongis peltatis ventre vix con- 

 cavis, testa la^viuscula. — Southwestern border of Texas, at Presidio, 

 Bigelow in Mexican Boundary Survey. Organ Mountains, New 

 Mexico, T7. R. Vasey, 1881, Coahuila in Mexico, near Parras and 

 Monclova, Palmer, 1880, no. 404, 406. — Except for the narrow 

 seeds, this is a much less anomalous Houstonia than is my H. acerosa, 

 of the same region, and the two must go together into a section for 

 which I incline to preserve De CandoUe's name of Ereicotis, some 

 species of which certainly have loculicidal dehiscence ; and I doubt if 

 the genus Mallostoma can be maintained.* 



Galium Rothrockii. Facies G. Wrightii, Gray, pariter sufFrutico- 

 rum, erectum, sed glabrum, lajve ; foliis quaternis minoribus linearibus 

 subcoriaceis eveniis mucronatis ; panicula laxa floribunda ; fructu par- 

 cius hirsuto. — S. Arizona, C. Wright (part of no. 1113), Rothrock 

 (no. 675, not mentioned in his volume, the fruit hardly formed); Lem- 

 mon, 1881, with good fruit; New Mexico, Rushy. 



Verxoxia Ervendbergii. Zp/)iWa/j/oo, herbacea, glabella ; caule 

 ramoso ; foliis lanceolatis vel oblongo-lanceolatis serrulatis supra 

 scabris ; capitulis laxe corymboso-cymosis sparsis longiuscule pedun- 



* HousTOXiA (Ereicotis) acerosa, first published as Hedyotis (Ereicotis) 

 acerosn, in PI. Wright, i. 81, has been referred to ^lallostoma by Herasley, in 

 Biol. Centr. Amer. ii. 31, notwithstanding the note in Gen. PI. The roundish 

 seeds have a deep but small ventral excavation. Houstonia humifusa. Gray, 

 Proc. Am. Acad. iv. 314, as Hooker remarks, has the stipules sparsely ciliate 

 with setif orum teeth : no. 400-403 of Palmer's 1880 coll. are forms of it. 



