274 



MONOPETALOUS ORDEES. 



Lindernia, Micranthemum, Hemiantbus. 3. Riiinanthi- ^'»- 1^' 



VM — Limoselliv, Capraria, Poljpremum, Digitalis, Ve- 

 ronica, Leptandra, Seymeria, Gerardia, Castillya, Eu- 

 cliroma, Oithocarpus, Scliwalbia, Bartsia, Euphrasia, 

 Rbinantlms, Pedicularis, Mclampyrum^ Buchnera. 



Fig. 196, a, DicrrAUS purpurea: b, a ripe fruit of 

 Antirrui.num majus ; c, a cross section of its ovary ; 

 d, a sectiou of the seed. 



488. YERBENACEiE, t?i6 Verbena Tribe. — 

 Trees or sJiriibs, sometimes herbaceous 

 plants. Zea/ves mostly opposite. Calyx 

 tubular, persistent. Corolla tubular ; limb 

 generally irregular. Stamens 4, didyna- 

 mous, sometimes only 2, inserted on the 

 corolla. Ovaiy free, 2-4-celled ; ovules 

 usually 4, erect or pendulous. Fruit nu- 

 cumentaceous or baccate, composed of 2 

 or 4 nucules united. Seeds 1-4 ; albumen 

 fleshy or wanting ; embryo straight. 



a. Properties : many of the plants are fragrant and aromatic, some are bitter, tonic 

 and astringent, others are acrid. 



Genera. — Verbena, Lantana, Callicarpa, Zapania, Phryma, Avicennia. 



489. Labiatj^, tJie Lahiate^ or Mint Tribe. — Herbs or under- 

 sJiruljs with quadrangular stems. Leaves oj^posite, or some- 

 times whorled, replete with receptacles of aromatic oil. Flowers 

 in nearly sessile, 02:)posite, axillary cymes. Calyx tubular, per- 

 sistent, 5-toothed, 5-cleft, or bilabiate. Corolla bilabiate. Sta- 

 mens 4, didynamous, inserted upon the corolla. Ovary deeply 

 4-lobed, the style proceeding from the base of the lobes. Fruit 

 1 to 4 small nuts inclosed within the 

 persistent calyx. Seeds y^'\\\\ little or 

 no albumen ; emhryo erect ; cotyledons 

 flat. 



a. Properties : these plants are generally fragrant 

 and aromatic ; none are poisonous or injurious. 



Genera. — Ocimum, Hyptis, Lavandula, Isan- 

 thus, Mentha, Lycopus, Salvia, Rosmarinus, Mo- 

 narda, Pycnanthemum, Tullia, Thymus, Satureja, 

 Hyssopus, Collinsonia, Cunila, Hedeoma, Melissa, 

 Cliuopodium, Prunella, Cleonia, Scutellaria, Cala- 

 mintha, Ceranthora, Nepeta, Glechoma, Draco- 

 ccphalum, Macbridea, Synandra, Lamium, Leon- 

 urus, Galeopsis, Stachys, Marrubium, Ballota, 

 Leucus, Moluccella, Teucrium, Ajuga. 



Fig. 197, a, Saliva officinalis (sage) : 6, the pis- 

 til; c, the corolla of Lamium album viewed lat- 

 erally ; d, the 5-toothed calyx ; e, the upper lip 

 formed of two united petals ; /, the lower lip of 

 three petals ; g, style ; h, a carpel cut vertically. 



490. BoRAGiNACEiE, the Borage Tribe. 

 — Herbs or shrubs^ with round stems. 



Fig. 197. 



