PHLOX FAMILY C99 



13. GILIASTRUM (A. Brand) Rydb. 



Perennial or annual herbs. Leaves alternate, from toothed to pinnatifid. 

 Flowers perfect, cymose. Calyx campanulate, 5-lobed or 5-cleft; tube scarious 

 in the sinuses and bursted by the fruit; corolla rotatc-funnelform, deeply 5-cleft, 

 Stamens inserted near the base of the corolla. Seeds several in each cell, muci- 

 laginous when wetted. [GiHa § Giliastrum A. Brand.] 



1, G. acerosum (A. Gray) Rydb. Suffruticose perennial, 1-3 dm. high, 

 very leafy, glandular-puberulent; leaves pinnatifid, with linear-subulate, acerose 

 divisions^ glandular-puberulent; calyx glandular-puberulent, 5-6 mm. long; teeth 

 lanceolate, acuminate; corolla blue, nearly rotate, about 1 cm. long; lobes broadly 

 ovate, much longer than the united portion. Gilia rigidula acerosa A. Gray. G, 

 acerosa Brilton. Sandy plains and hills: Tex. — Kans. — Colo. — Ariz. Son, Ap- 



Jl. 



Family 110. HYDROPHYLLACEAE. Waterleaf Family. 



Perennial or annual, mostly caulescent herbs, with watery sap. Leaves 

 alternate, or rarely opposite or in basal rosettes, without stipules. ^ Flowers 

 perfect, regular or nearly so, in scorpioid racemes or cymes, or solitary and 

 axillary. Calyx of 5 more or less united sepals, often appcndaged in the 

 sinuses. Corolla 5-lobed, mostly campanulate or funnelform, often ap- 

 pendaged inside, the lobes convolute or imbricate in aestivation. Stamens 

 5, alternate wdth the corolla-lobes; filaments adnate to the base of the corolla, 

 distinct, often bearded; anthers introrse, versatile. Ovary of 2 united car- 

 pels, 1-celled or 2-celled, with parietal placentae; styles more or less united; 

 stigmas often capitate; ovules numerous, or few. Fruit a capsule. Seeds 

 amphitropous; endosperm cartilaginous. [Hydrokaceae.] 



CoroIIa-lobes convolute in bud ; placentae dilated. 



Stamens exserted; calyx without appendiges; leaves alternate. 1. Hydrophyllum. 



Stamens included. 



Calyx without appendages; leaves opposite. , i ^ 



Seeds inserted only on the inner face of the placentae, globose, alveolate; 



calyx enlarged in fruit. 2. MACROCALYy, 



Seeds inserted on both faces of the placentae, oblong or vermiform, rugose; 

 calvx not enlarged in fruit. 3- Eucrypta. 



Calvx with appendages in the sinuses, not much enlarged m friut; leaves alternate 

 or opposite. 4. Nemophila. 



CoroUa-lobes imbricate in bud; placentae not dilated. 

 Styles more or less united; stamens mostly equal. 



Styles free at the apex. . ., * ^i. * ^ 



Flowers in cixcinate racemes, or sohtary m the axils of tbe stem-leaves. 



Calyx-lobes in two series, the outer 3 large and cordate. 



^ 13. Tricardia. 



Calvx-lobes in one series, similar or nearly so. 



CoroUa deciduous, mostly purpUsh, bluish, or white. 



Flowers in circinate racemes. S. Phacellv. 



Flowers sohtary in the axils of stem-leaves. 12. Conanthus. 

 Corolla persistent, marcescent, yeUowish. 



Capsule ovoid, turgid; flowers not drooping. 6. Mtltttzxv. 

 Capsule compressed; flowers drooping. 7. Emmen.vnthe. 



Flowers solitary, from the axils of basal leaves. 8. CapNOREA. 



St vies united to the apex; flowers racemose, but hardly circinate. 



■* 9. ROMANZOFFIA. 



Styles free to the base; stamens imequal. 



Capsule coriaceous; shrubs. 10. Eriodictyon. 



Capsule membranous; herbs. 11- iMARiu\TTN 



1. HYDROPHYLLUM (Tourn.) L. Water-leaf. 



Perennial (all ours) or biennial, caulescent herbs. Leaves alternate, pubes- 

 cent lobed, or (in all ours) pinnately divided. Flowers in more or less scorpioid 

 cymes. Calyx-tube short; lobes 5, narrow, \A-ith naked sinuses.^ Corolla white, 

 blue or purple; tube short; lobes 5, convolute, each with a linear appendage 

 Tv^thin. Stamens 5, exserted; filaments partly pubescent. Qvary- 1-ceUed, 

 pubescent; styles 2-cleft; ovules 4, enclosed by the fleshy placentae, which ^at- 

 tached at the bottom and top of the ovary. Capsule 2-valved; seeds 1-4, thick. 



