U24 ADDITIONS AND CORRECTIONS 



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453 Before CAESALPINACEAE insert: 



3. STROMBOCARPA A. Gray. SCREW BEAN. SCREW POD 



MESQUITE. TORMILLO. 



Low spiny trees. Leaves bipinnate; stipules spiny. Flowers per- 

 fect. in dense axillary cylindric spikes. Calyx campanulate, slightly 

 5-lobed. Petals 5, lanceolate. Stamens 10, free. Ovary stipitate, pubes- 

 cent. Pod densely spirally twisted, woody without, pulpy within. Seeds 

 obovate with a horny endosperm. 



1. S. pubescens (Benth.) A. Gray. Tree up to 10 m. high; primary 

 pinnae 1 or 2 pairs, each with 4-8 pairs of leaflets; stipular spines 1-2 

 cm. long; leaflets oblong, 1-2 cm. long, sharp-pointed, finely hairy, 

 netted-veined; calyx hairy without; petals lanceolate, woolly within; 

 stamens exserted, 4 mm. long; pod 3-5 cm. long, cylindric, about 8 mm. 

 in diameter, pale-yellow. Prosopis odorata Torr., in part. P. pubescens 

 Benth. Sandy bottom lands: Tex. sw Utah Calif. 



456 After S. sericea insert: 



2. Sophora stenophylla A. Gray. Low perennial densely white-silky; 

 leaves pinnate; the leaflets 5-11, narrowly linear, 1-2.5 cm. long, about 

 2 mm. wide; calyx densely silky, the tube 8 mm. long, the lobes lance- 

 subulate, 5 mm. long; corolla light blue, 18-20 mm. long; petals subequal, 

 the keel-petals obtuse. Sandy Hills: Ariz sw Utah. L. Son. 



461 Under L. tenellus, for the synonum L. Blackinshippii read L. Blankin- 

 shipii. 



462 Under L. argentinus, last line, for "Neb." read "Nev. " 

 467 After L. barbiger insert: 



60a. Lupinus Hillii Greene. Perennial; stem 3-5 dm. high, purplish, 

 densely short-villous and with scattered long white hairs; leaflets 5-8, 

 cuneate-oblong, obtuse, about 2.5 cm. long and 8 mm. wide, densely 

 strigose-silky on both sides, less so above; raceme 7 8 cm. long, lax; flowers 

 more or less verticillate; corolla about 8 mm. long, blue-purple; wings 

 longer than the keel and the banner; keel strongly ciliate almost to the 

 apex; pod silky-villous, short, 2-3 seeded. Pine woods: n Ariz. s Utah. 



477 The authority for M. alba, instead of Desv. read Desr. 



477 Under A. americanum, the authority of the synonym Lotus americanus, 

 instead of Bishop read Bischof. 



478 Under A branchycarpus add the synonym: Lotus trispermus Greene. 

 Anisolotus trispermus (Greene) Woot. & Standl. A less hairy variety, 

 which is represented in sw Utah. 



479 For A. angustifolia read Amorpha fragrans Sweet, an older name. 



480 Further study (See Am. Fl. vol. 24) has rexealed that the genus 

 Psoralea L. in strict sense is not found in America and that the two 

 subgenera Psoralidium and Pediomelum are better regarded as distinct 

 genera. The names of the species should therefore be: 



Psoralidium junceum (Eastw.) Rydb., P. lanceolatum (Pursh) 

 Rydb., P. micranthum (A. Gray) Rydb., P. Purshii (\ail Rydb, 

 P. stenostachys Rydb., P. steriophyllum Rydb., P. tenuiflorum 

 (Pursh) Rydb.. P. linearifolium (T. &G.) Rydb., P. collinuni Rydb., 

 P. argophyllum (Pursh) Rydb., and P. digitatum (Nutt.) Rydb. 



Pediomelum cuspidatum (Pursh) Rydb., P. esculentum (Pursh) 

 Elydb., P. hypogaeum (Nutt.) Rydb.,' P. megalanthum (Woot. & 

 Standl ) Rydb., P. mephiticum (S. Wats.) Rydb., and P. castoreum 

 (S. Wats.) Rydb. 



481 After 7. P. tenuiflorum insert: 



7a. Psoralidium Bigelowii Rydb. Stem 3-6 dm. high, OH eseent, 

 strigose; branches spreading; leaves 3-foliolate, or the lower ;> liolate; 

 leaflets of the stem-leaves obovate, 1-3 cm. long, 5-12 mm. wi; c trigose 



