BORAGE FAMILY 371 



Plants not purplish or rarely so ; nutlets strongly constricted at apex and at 

 base, and thus cruciform, vitreous-shining or glassy. 

 Calyx about twice as wide as long ; spikes not bracteate or only at base; 

 stems many from base, slender; cismontane Cal. and trans- 

 montane ne. Cal 3. P. tenellus. 



Calyx nearly as broad as long; spikes bracteate; stems few, stout; 



cent, and n. Cal 4. P. shastensis. 



Nutlets transversely ridged dorsally, the ridges irregular, well separated and form- 

 ing (with the 3 keels) depressed areolae, the areolae papillate, the ridges 

 often sharp and thin or sometimes rounded ; calyx in fruit 2 to 3 lines long. 

 Caruncle conspicuous, ring-like or annular, bordering a circular hollow; calyx 

 cleft to the base; corolla tube exceeding the calyx. 

 Spikes bractless; dorsal areolae of nutlets rectangular and regular with 



smooth ridges; keels of nutlet not winged; cent, and n. Cal 



5. P. fulviis. 



Spikes bracteate ; dorsal area of nutlets not areolate or the areolae irregular 



and unequal with short, curved or interrupted rugae; keels of 



nutlets narrowly whitish-winged ; mostly inner Coast Range 



6. P. infectivus. 

 Caruncle solid ; calyx white-hairy, cleft % to base ; corolla-tube not exserted or 



only slightly exserted from calyx ; wide-ranging 7. P. canescens. 



Calyx-lobes connivent over fruit, in age circumscissile ; calyx in fruit 1 to 1% lines long; 

 mature nutlets 1, 2 or 3 (or 4), the caruncle solid; midvein and margin of 

 leaves purple-stained. 

 Flowers in forked spikes, not bracteate, or only at base ; stems mostly erect, rather 

 tall (10 to 30 inches high) ; nutlets (as seen from the side) somewhat com- 

 pressed, the dorsal areolae papillate or tuberculate (rarely smooth) ; wide- 

 ranging 8. P. nothofulvus. 



Flowers in long simple bracteate spikes; stems low (5 to 8 inches high), usually 

 ascending; nutlets (as seen from the side) strongly arched, the areolae 



smooth or minutely papillate; cent, and s. Cal 9. P. arizonicus. 



Flowers in close clusters or glomerules; e. side Sierra Nevada 10. P. hispidus. 



Caruncle elongated, extending along the ventral keel ; nutlets trigonous ; flowers mostly in con- 

 gested glomerules or dense spikes, the glomerules or spikes l^ to 1% inches long; deserts 

 on e. side Sierra Nevada. 



Nutlets irregularly rugose; corolla 2 to 3% lines broad 11. P. kingii. 



Nutlets regularly tessellate; corolla % to 1 line broad 12. P. jonesii. 



1. P. uncinatus J. T. Howell. Stem with many branches from the base, form- 

 ing an erect bushy plant 13 inches high ; herbage reddish, thinly spreading-bristly; 

 leaf -blades oblong, 4 to 11 lines long; flowers very remotely scattered along the 

 stems from near the base (or solitary in the axils) and also loosely congested in 

 terminal racemes 2 to 9 lines long ; calyx densely uucinate-bristly, destitute of soft 

 hairs; corolla i/4 to Vs I'^e broad ; nutlets with somewhat quadratish body, rounded 

 at base and abruptly attenuate at apex, the dorsal side transversely tuberculate- 

 rugulose and weakly keeled towards apex, the ventral side rugulose, the ventral 

 keel thin and rather high. 



Caiion sides, 1000 to 1700 feet : Santa Lucia Mts. ; Gabilan Range. Apr.-May. 



Tax. note. — Two stations have been recorded for Plagiobothrys uncinatus : Arroyo Seco in the 

 Santa Lucia Mts. and Vancouver Pinnacles in the Gabilan Range (Lflts. W. Bot. 2:255). The 

 plant in habit is similar to Plagiobothrys torreyi ; in technical characters it is extremely close to 

 P. myosotoides; the nutlets are identical with those of P. myosotoides (as represented by Cali- 

 fornia plants) but the calyx exhibits the remarkable difference of uncinate bristles. Now that 

 this unusual plant has been published, probably it will be searched for successfully. Its status, 

 however, seems dependent on the development of knowledge concerning the very closely allied 

 Plagiobothrys myosotoides. Due to insufficient material, especially from Chile, the ultimate evalu- 

 ation of these two forms cannot now be predicted. 



Refs. — Plagiobothrys uncinatus J. T. Howell, Lflts. W. Bot. 2:255 (1940), type loc. Santa 

 Lucia Camp, Arroyo Seco, Santa Lucia Mts., Eastwood 4" JJoroell 2416 (typ. vidi). "Immediately 

 related to" P. myosotoides Brand of Chile. — I. M. Johnston, Jour. Arn. Arb. 20:383 (1939). 



2. P. torreyi Gray. (Fig. 417.) Stems several to many from the base, erect 

 or decumbent, usually simple, 3 to 10 inches long, commonly rather leafy; roots 

 purple ; herbage conspicuously spreading-hispid, the leaves very dark green ; leaf- 

 blades oblong to oblong-ovate or linear, sessile, 3 to 6 lines long or the lower be- 



