Revisions of Some Plant Phyla 55 



few. Evolvulus, Quauwclit, Ipomoea, Convolvulus, Cuscuta 

 (parasitic). (Pf. IV, 3a, i.) 



Family 168. Hydrophyllaceae. Herbs with radical or alter- 

 nate (rarely opposite) leaves; corolla-lobes imbricated (or con- 

 torted); ovary i- or incompletely 2-celled; ovules 2 or more. 

 Hydrophylhim, Phacelia, Nama. (Pf. IV, 3a, 54.) 



Family 169. Borraginaceae. Forget-me-nots. Herbs, shrubs, 

 and trees with alternate leaves; corolla-lobes imbricated (or con- 

 torted) ; ovary bicarpellary, 4-celled, 4-lobed; ovules solitary. 

 Heliotropium, Cynoglossum, Oreocarya, Borrago, Myosotis, Mer- 

 tcnsia, Lithospermum. (Pf. IV, 3a, 71.) 



Family 170. Nolanaceae. Herbaceous or suffrutescent pros- 

 trate plants, with alternate, entire leaves ; calyx 5-parted ; corolla 

 long funnel-shaped ; stamens 5, inserted on the corolla ; pistils 5 

 or united. Nolana. (Pf. IV, 3b, i.) 



Family 171. Solanaceae. Nightshades. Herbs, shrubs (and 

 trees) with alternate leaves; corolla-limb more or less plicate 

 (rarely imbricated); ovary mostly 2-celled; ovules many. Ly- 

 cium, Atropa, Hyoscyamns, Pliysalis, Capsicum, Solanum, Da- 

 tura, Nicotiana, Petunia. (Pf. IV, 3b, 4.) 



Order Gentianales. Corolla actinomorphic (regular) ; sta- 

 mens alternate with the corolla-lobes, and usually of the same 

 number; leaves opposite (rarely alternate). 



Family 172. Oleaceae. Olives. Shrubs and trees (rarely 

 herbs) with mostly opposite leaves; corolla-lobes valvate or o; 

 stamens 2 (or 4) ; ovary 2-celled; ovules i to 3. Syringa, Olea, 

 Jasminnm, Fraxinus. (Pf. IV, 2, i.) 



Family 173. Salvadoraceae. Shrubs and trees with opposite 

 undivided leaves ; corolla-lobes imbricated ; stamens 4 ; ovary 2- 

 celled; ovules 2. Salvadora. (Pf. IV, 2, 17.) 



Family 174. Loganiaceae. Herbs, shrubs, and trees with 

 mostly opposite simple leaves ; corolla-lobes imbricated or con- 

 torted ; stamens 4 to 5 (or indefinite) ; ovary 2- to 4-celled ; ovules 

 I to many. Gelseuiium, Logania, Spigelia, Strychnos. (Pf. IV, 

 2, 19.) 



91 



