608 PROCEEDINGS OF THE AMERICAN ACADEMY. 



erecto, inferiore declinato ; stylo glabro latitudine filamenta aequanti ; 

 stigmate obscure bidentato ; ovario ovato-acuminato, inserto in recep- 

 taculo cupulato ; capsula elliptica basi ad stipam latam contracta, apice 

 minute glandulifera ; seminibus suborbiculatis minutissime muriculatis 

 et palmate nervatis. — Durango : San Ramon, April-May, 1906, Br. 

 Edward Palmer, no. 73 (type, in hb. Gray). Dr. Palmer notes that 

 this is a loosely branching plant 12-15 dm. high, with many scarlet 

 flowers, growing at the edge of shady woods. It belongs to Sect. Sphen- 

 ostegia Nees in DC. Prodr. xi. 479, and is near B. sexangularis Juss. 

 and 1). brachiata Spreng. The corolla in this is larger, with the lips 

 less spreading. 



Tetramerium flavum, n.sp., caule erecto divaricate ramoso6-12 dm. 

 alto quadrangulato, inter angulos striate, scabridulo investo pilis tenui- 

 busadpressis et pilis articulatis longioribus; ramis oppositis, junioribus 

 glandulosis et dense albo-pubescentibus ; foliis penninervatis ovato- 

 acuminatis basi ad petiolum brevem inaequaliter attenuatis longissimis, 

 in specimine viso 12 cm. longis, 5 cm. latis ; petiolis 2 cm. longis ; spicis 

 axillaribus et terminalibus simplicibus vel compositis (ultima spica 

 longissima) ; floribus imbricatis, bracteis distichis oblanceolatis aristatis 

 trinerviis 5 mm. longis 1.5 mm. latis, apice recurvatis ; involucri brac- 

 teolis connatis carinatis obovatis apice aristatis quinquenervatis 12 mm. 

 longis, floram solitariam includentibus ; calycis laciniis lineari-setaceis 

 glandulifero-pilosis membranaceis 3 mm. longis ; corollae flavae tubo 

 anguste cylindrico 4 mm. longo, laciniis patenti-divaricatis 1 cm. longis, 

 labio superiore erecto spatulato 1 cm. longo, inferiore ternato, segmentis 

 patenti-divaricatis obovatis 1 cm. longis ; filamentis faucibus insertis, 

 glabris ; antherarum loculis parallelis paulo inaequalibus muticis con- 

 junctis; ovario crasso-stipitato apice hispido breve acuminate calycis 

 lacinias superanti ; receptaculo crasso clavato ; stylo bifido antheras 

 superanti. — Durango : San Ramon, April-May, 1906, Dr. Edward 

 Palmer, no. 75 (type, in hb. Gray). This is most closely related to 

 T. aureum Rose, which, however, has bracts and bracteoles obovate 

 obtuse, leaves truncate or subcordate at base. From all other species it 

 differs in having the cauline bracts narrower and much shorter than the 

 involucral. It is a showy plant, rather woody, growing at base of moun- 

 tains near the edge of woods. It is a free bloomer with "canary 

 yellow flowers that close at night." 



