S4 MALVACE^. 



1. liAVATERA, l.iunaBus. 

 L. assurgentiflora, Kellogg. Showy liowurs in axillary cluBtera. 



3. MALVA, Linn. 

 M. rotiindifolia aad M. borealis are introduced weeds. 



3. SIDALCEA, Gray. 



* Perennials with usually clustered sterna deeurribent at base. 



Raceme loose: no stellate hairs: rose-purple petals an inch long 1 



Raceme spicate: simple and stellate hairs: petals notched, pinkish, 6 lines long 2 



Like No. 2, but the larger flowers deep lilac-purple 3 



Stems branching! calyx globose in fruit: carpels smooth, straight 4 



Nearly glabrous, glaucous, pale, decumbent: petals obtuse or truncate 5 



Stellate pubescence short: large leaves dark green, slightly 5-lobed : . . . 6 



* * Annuals with erect branching stems. 



Carpels strongly incurved and sharply rugose on back 7 



Carpels not incurved or rugose, conspicuously hairy-beaked 8 



Carpels several — nerved along the back: calyx-lobes abruptly acuminate 8 



Pedicels subtended by 5-7-parted hispid bracts: calyx-lobes slender 10 



Large, with cordate, 3-7-angled leaves: white flowers in close clusters: 11 



1. S. malvseflora, Gr. (S. humilis, Gr. of Cal. Bot., etc.) Common coast species. 



2. S. spioata, Greene. Carpels small, hairy, not reticulaled. Sierra Nevada. 



3. S. campestris, Greene. Stems bristly with deflexed hairs: calyx stellate-hairy. 

 i, S. Oregana, Gr. Glabrous below, 1 to 5 ft. high: corolla 6 lines lOag or more. 



5. S. glaucesens, Greene. Calyx lobes very slender. High Sierras. 



6. 8. asprella, Greene. Decumbent, leaves shaped alike. Foot Hills, Sierras. 



7. S. Eartwegi, Gr. Glabrous except the hispid calyx and pedicels. Sac. Val. 



8. S. hirsuta, Gr. Stout and tall, branching: flower-clusters dense. Chico, Cal. 



9. S. calycosa, Jones. Corolla small, light purple: calyx long-ciliate. Cent. Cal. 



10. S. diploscypha, Gr. Hirsute: fiowers large, umbellate clustered. Cent. Cal. 

 Var. minor, Gr. Flowers racemose : petals with a spot at base. Cent. Cal. 



11. S. malaoliroides, Gr. Petals oboordate: carpels smooth. Redwoods, Cal. Coast. 



4. MALVASTBUM, Gray. 



Perennial, often shrubby: stoma hoary or gray with soft pubescence 1 to 5 



Perennial: densely stellate-hairy or hispid : dense-flowered 6 



Annual erect with spreading hairs: leaves reuiform, long petioled 7 



Annual, decumbent: small leaves 5-lobed: flowers mostly solitary 8 



I. U. Thurberi, Gr. Shrubby, brauchfis slender: spikes naked: flowers small. 



