HYDROPHYLLACEAE (WATEELEAF FAMILY) 407 



3. MACROCALYX Trew. 



Leaves pinnately parted bir bi- or tripinnately dissected and the bractless 

 flowers in axillary peduncled racemes. iCalyx without appendages 'iat .the 

 $inasesjiiand usually, , much enlarged under the fruit. Corolla white, camr 

 panuiate, shorter or little, longer than the calyx, the internal appendages 

 minute or none. lOvules 4-8. — Mllisia. , ., , 



1. Macrocaljrr Nycttlea (L.) KuJitze, ReV. Gen: PI. 434, 1891. Annual, 

 1-2 dm. high, at length very difftise: leaves on naked or' barely margined 

 petiole^l the' diyikiolns 7-13, lanceolate, acute, mostly 1-3-toothed or'lobed: 

 pedicles solitary in the forks 'W opposite the leaves, or some of the later 

 one^ racj^mose and secund: calyx-lqbes acuminate, longer than the capsjile: 

 tcrdUa rather shorter than the Calyx.— Colorado to the Saskatchewan, and 

 ■ea^waifd atirosS' the continent. , ■ i - 



' . 4. NEMOPHILA Nutt. 



Dejiqat^ JoYf annuals. Leaves opposite, or the uppermost alternate, more 

 or less pinnate. FJowers solitary qr inclined to be racemose. CaljTC ■vr^.th. a 

 j;ejflgxed,appendage jn eacji sinus,^ accrescent. Cqro.Ua rotate to broadly c^m- 

 panjilqite, m all our species longer, than the calyx, with 10 internal appendages 

 ^t b^e. Stamens, snorter than, the corolla, inserted, near its base. Style^ 

 more oir^ess 2-clefii; ovules 4-20. 



1. Nemophila parviflora Dougl. Hook. Fl. 2: 79. 1840. Stems slender and 

 weak, trailing or procumbent: leaves pinnately lobedi parted, or divided into 

 3-5 lobfes; calyx-appendages rather conspicuous, or sometimes almost none: 

 corcdla white' or whitish, 5^8' mm. in diameter, narrowly campanulate to al- 

 most rotate, the lobes longer than the tube; appendages adherent by one edge: 

 filaments inserted 'oa the very base 'of the corolla: seeds 1-4, often deeply pitlied. 

 -^From Western Wyoming to California and Washington. ' 



,;, „ 5. PHACELIA 



: 'Aiihiial^ ,fciehnial, or rarely perennial mostly hirsute or hispid herbs, often 

 glaiidldAr, "with entire or variously lobed or dissected leaves, and often showy 

 flbW4rs ia siSdrJiibid spikes or racemes. Calyx deeply 5-parted. Corolla front 

 nearly rotate to canipanulate, tubular or fUfinelforni, deciduous, the "tubes 

 'ccteiffionly with ihiternal lamellate projections or appendages. Style 2-clfeft. 

 Capsiile iTcelled, 2-valved, the' thin septa-like placentae adherent. "/' , 



Leaves'simple and entire, or the lower more or less pinnate with en- 

 tire divisions.: m ' 

 Annuals. , ; , , i 

 Vernal and evanescent, diminutive; leaves ovate ... 1. P. Knightii. 

 'Aestival; leaves' or their lobes linear-oblong . • • . 2. P. linearis. '' 

 Rather la^'ge and coarse perennials, op biennials. 



White-canescent; stems'clustered, assurgent .... 3. P. leucophylla, 

 Hispidly hirsiite; stems mbstlj^ single, brect . . . . 4. P. heterophyllk. 



Leaves sinuate or crenate to bipinnatifid. : ' ' . . ' 



AnnualS'Orbieqnials^ t , " , . .■ . 



Leaves pinnately divided quite to the midrib. 

 , ' Terminal divisions of 'the leaves distinctly larger than the ' 



• ••■■■'iolo : iMeral ' "..- :•• .'■:'''.■'. : . . ■ . 6.. P. splendens. I ■'<> 



Terminal divisions of the leaves not larger than the lateral. 

 , I .Ovules and seeds 4 or by abortion fewer. 

 ' ' ' ' CaineScent'bi^hnial, scarcely glandular - ... 6. P. deserta. 

 :i " ,1 Sordid-green' glandular annuals. 



I! , ,f., Cp^olTa-lobes crenulate to erose-denticulate . . 7. P. glandulosi^. , 

 I I , Corolla-lobeS entire . , ., . . . . 8. P. neo-mexicana,, 



' ''' Dvtilraaiid Steeds several to num^r6us(8-'-40). 



I > VI jPlants siinple, or branched above, 2^-3 dm; high . . 9. P. Franklinii. 

 I Plants diffusely slender-branched from the base, low , 10. P. Ivesiana. 

 Leaves merely sinuately or crenately lobed. 



Leaves coarsely arid sinuately lobed halfway to the midrib 11. P. corrugata. 

 Leaves finely and shallowly>crenate , , "i; ,' , , 12, P. integrifoUa, 



