Tab. 8C57. 

 LUPINUS Chamissonis. 



California. 



Lkguminosae. Tribe Gexisteab. 

 Lupinus, Linn. ; Benth. et Hook. f. Gen. Plant, vol. i. p. 480. 



Lupinus Chamissonis, Esclisch. in Mem. Acad. Petersb. vol. x. p. 288 (1826) ; 

 Walp. Bepert. vol. i. p. 603 ; Jepson, Fl. W. Mid. Calif, p. 315, Hell*r in 

 Muhlenbergia, vol. vi. p. Ill ; species L. albifronti, Benth. affinis sed vix 

 fruticulosa, floribus haud unifonniter coeruleis carina eciliata distincta. 



Suffrutex densus, 3-10 dm. altus, ramosus, caulibus sericeo-tomentosis vel 

 superne sericeo-pubescentibus indumento subargenteo ramis paucis 

 elongatis pluribus abbreviatis. Folia plerumque 5-7-foliolata ; foliola 

 oblanceolata, longe cuneatim attenuata, obtusa vel subobtusa breve 

 cuspidata, 15-30 mm. longa, 4' 7 mm. lata, utrinque adpresse argenteo- 

 sericea ; petiolus 15-25 mm. longus ; stipulae subulatae, ad 5-8 mm. 

 petiolo adnatae, parte libera 6-7 mm. longa. Bacemus 5-10 cm. longus, 

 laxus vel densiusculus floribus solitariis vel rarius magis minusve vertfcil- 

 latis; bracteae lanceolatae, acuminatae, sericeo-tomentosae, ad 1 cm. 

 longae, cito caducae ; pedicelli 5-6 mm. longi, albo-tomentelli. Calyci's 

 6-7 mm. alti labium superum ad medium vel ultra 2-fidum, inferum 

 lanceolatum, obtusiusculum, utrinque albo-tomentosum. Corolla variegata ; 

 vexillum explanatum orbiculare, caerulescens vel lilacinum basi maculo 

 amplo flavido ornatum, 10-12 mm. altum ; alae late suboblique oblongo- 

 ellipticae, obtusissimae, apicem versus caerulescentes, ceterum albidae ; 

 carina anguste acute rostrata, eciliata, rostro atro-violaceo excepto albida. 

 Ovarium argenteo-tomentosum. Legumen late lineare, 2 ■ 5-4 cm. longum, 

 7-8 mm. latum, tomentosum, inter semina oblique impressum. — O. Staff. 



The Papilionaceous genus Lupinus to which the subject 

 of our illustration belongs is highly developed in North 

 America. The late Mr. Sereno Watson in 1873 published 

 a careful revision of the species then known to occur in 

 extra- tropical North America which includes accounts of 

 fifty-six different forms. During recent years valuable 

 contributions towards a more complete knowledge of 

 this large and very natural genus, based on an extensive 

 acquaintance with its species in the field, have appeared 

 in the American botanical journal ■ Muhlenbergia,' and 

 in 1910, in the sixth volume of this periodical Mr. A. A. 

 Heller, the author of these articles, has expressed his 

 belief that in the New World to the north of Mexico, 

 no fewer than two hundred and thirty distinct forms 

 Aran., 1916. 



