594 PROCEEDINGS OF THE AMERICAN ACADEMY. 
flavis, tubo proprio gracili 1.3 mm. longo pubescenti, faucibus eylin- 
dricis 3 mm. longis glabriusculis ; achaeniis nigrescentibus compressi- 
usculis obovatis striatulo-sulcatis 2.5 mm. longis. — Prod. vy. 550 
(1836); Deless. Ic. Sel. iv. t. 30 (1839); Hemsl. Biol. Cent.-Am. 
Bot. ii. 157 (1881). — Locis montanis mexicanis praecipue in terra 
argillacea prope rivulis altitudine 1500-2500 m. haud rara, JALISsc0: 
Nelson, nn. 4024, 4172. Micnoacan: Pringle, n. 3940; Nelson, 
nn. 6570, 6889. Moretos: Pringle, nn. 9955, 13,902, 13,086 (infeli- 
citer sub nomine Trigonospermum floribundum errore  distributa). 
Oaxaca: Ghiesbreght, anno 1842. Sierra Madre inter Michoacan et 
Guerrero, Langlassé, nn. 83, 801. 
Forma PUBESCENS Greenman, foliis subtus saltim nervos versin pet- 
manenter laxeque floccoso-lanosis ; ligulis quam eae formae typicae 
paulo longioribus etiam ad 2 cm. attingentibus. — Proc. Am. Acad. 
xli. 261 (1905).— Cerro de San Felipe, alt. 2500 m., Conzatti, 
n. 30. 
2. R. connata Brandegee, herbacea perennis multicaulis 1-2 m. alta ; 
caulibus teretibus striatulis pubescentibus apicem versus trichotomo- 
ramosis ; foliis ovati-lanceolatis regulariter serratis gradatim acutatis 
basi paulo angustatis late perfoliato-connatis 5-9 cm. longis 2-4 «m. 
latis utrinque pubescentibus ; capitulis laxe paniculatis ; pedicellis 
3-6 cm. longis saepissime nutantibus glanduloso-pubescentibus ; squa 
mis involucri exterioribus 5 inaequalibus ovati-oblongis vel ellipticis 
integris vel apice 2-3-dentatis ca. 13-16 mm. longis ca. 8 mm. latis 
utrinque laxe glanduloso-pubescentibus, squamis interioribus tenuibus 
- pallide viridibus ovato-lanceolatis conduplicatis acutis 5-6 mm. longs 
dorso glanduloso-pubescentibus; flosculis 9 ca. 19, ligulis saepissime 
bilabiatis, labio inferiore 1 cm. longo ca. 7-nervio 3-4 mm. apice 
3-dentato, labio superiore e lobulis 1-2 lineari-oblongis saepe er 
1.7-2 mm. longis composito ; flosculis disci numerosissimis (ca. 
’ 
corollis 8 mm. longis, tubo proprio 2.5 mm. longo pubescent, faucibus 
graciliter cylindricis 5.5 mm. longis; achaeniis valde immaturis glabris 
— Zoe, iii. 241, t. 23 (1892).—In montibus prope capnum Sanch 
Lucae Californiae inferioris australis, Brandegee. 
3. R. attenuata Robinson, n. sp., verisimiliter fruticosa 2.5 ™. alta 
glabriuscula ; ramis trichotomis subteretibus fistulosis striato-angulatls, 
internodiis 1-1.5 dm. longis ; foliis oppositis lanceolatis vel rhomboideo- 
lanéeolatis tenuissimis breviter petiolatis 1.4-1.8 dm. longis i 
latis longissime attenuatis in latere utrioque 8-angulatis mucronula 
denticulatis vel subintegris utrinque viridibus subglabris, petlo® 
3-5 mm. longo vix alato ; capitibus 1.5-2 cm. diametro laxe eymose” 
paniculatis; pedicellis gracilibus saepe nutantibus glandulose- 
