HELioTROPiuM BOKA.GIN A^CE^ 477 



PBCTOCARYA 



gubulate tip or appendage. Ovules pendulous. Seeds with a straight 

 or inciorved embryo in sparing or copious albumen. 



2 HELIOTROPIUM Tourn. L. Gen, n. 179. 



Low herbs or shrubs with entire or rarely denticulate leaves 

 and small flowers in scorpioid cymes. Calyx deeply 5-parted, 

 persistent. Corolla salverform or funnelform, plaited and mostly 

 imbricated in the bud. Stamens included: ^laments short or 

 none: anthers connivent, sometimes cohering by pointed tips. 

 Style entire, sometimes wanting: stigma peltate -annular, forming 

 a complete ring surmounted by an entire or 2-lobed tip or appen- 

 dage. Ovary 4-celled with a single pendulous ovule in each cell. 

 Fruit dry, 2- or 4-lobed, separating into 2 indurated 2-celled and 

 2-seeded closed carpels, or more commonly into 4 1-seeded nutlets 



H. CnrassaTicnm L. Sp. 130. Wholly glabrous and more or less 

 glaucous : stems diffusely spreading, 6-12 inches long from a perennial root : 

 leaves succulent, obovate to oblanceolate or nearly linear, 1-2 inches long: 

 spikes mostly in pairs or twice forked, densely flowered, bractless : corolla 

 white with a yellow eye or changing to blue, with a rather ample 5-lobed 

 limb and open throat, the lobes rounded-ovate, rather shorter than the 

 tube : anthers free : Style hone : stigma umbrella-shaped, broad as the glab- 

 rous ovary: fruit 4-lobed, separating at maturity into 4 1-seeded natletEi. 

 In saline soil, interior of Oregon, and along the coast of most of the warmer 

 parts of the World. 



1 1 Ovary 4-pa;rted ( rarely 2-parted) from above into 1-celled 

 1-ovuled divisions surrounding the style. Stigma not annular. 



Tribe Hi, Boragex DC. Prodr. x, 1. Chiefly herbs with some- 

 what mucilaginous watery juice and entire leaves. Flowers mostly 

 near but not in the axils of leaves or bracts, or bractless in so-called, 

 spikes or racemes. Style entire, with a depressed or elevated base 

 to which the nutlets are attached (called the gynobase). Stigma 

 truncate or depressed-capitate. Ovules amphitropous or almost 

 qrthotropous and commonly ascending or erect, or anatropous and 

 commonly pendulous. Nutlets 4< or by abortion fewer, distinct or 

 at base united into pairs. Seeds without albumen. 



* Nutlets attached above the middle, wholly flat and thin, hori- 

 zontally divergent in pairs or radiate: the margins pectinately and 

 uncinately setiferous. 



3 PECTOOARfA DC. in Meisn. Gen. 279. 



Small annuals with imperfectly opposite leaves and small flow- 

 ers scattered along the whole length of the stem. Calyx deeply 

 5-cleft or 5-parted, spreading or reflexed in fi'uit. Corolla-appen- 

 dages with strong IcSfhicate processes, almost closing the throat. 

 Stamens short, included. Style short: with capitate stigma. 

 Nutlets flat and thin, attached at the inner end underneath to the 

 small depressed gynobase, either' winged, laciniate- bordered or 

 pectinately setose around the thin margins ; the bristles or prickles 

 simply uncinate at tip. 



