52 



CLASS XIII. ORDER I. 



Anno'na. Calyx 3-sepalled, thickened to- 

 gether at the base, concave, sub-cordate, 

 acutish ; petals 6, thickish, inner smaller or 

 none ; anthers sub-sessile, at the apex, an- 

 gled, dilated, covering its receptacles; 

 germs united into a sessile borr}- with the 

 back luuricate, scaly or reticulate, pulpy 

 within, having 2 oue-seeded cells. S. 



. CLASS XIIL DIDYNAMIA. 



ORDIIH \. GYMMOSPERMIA. 



A. Cahjx ^-clcft, with the divisions or teeth 

 iiearli/ equal. 



Teu'crium. Corolla deep-cleft on the 

 upper side and without an upper lip, lower 

 lip 3-cleft, the middle division rounded ; 

 Btamens and pistils incurved ; stamens ex- 

 sert through the cleavage on the upper side 

 of the corolla, (wood-sage, wild german- 

 der.) 



Mkn'^tha. Corolla nearly equal, 4-lobed; 

 broadest division emarginate ; stamens 

 erect, distant, (spearmint, peppermint.) 



IsAN'^THt's. Calyx somewhat bell-form; 

 corolla 5 parted; tube straight, narrow; 

 divisions ovate, equal ; stamens - nearly 

 equal ; stigma lineai*. recurved, (blue 

 gentian.) 



Hedeo'ma. Calyx 2-lipped, gibbous at 

 the base ; upper lip with 3 lanceolate teeth ; 

 lower lip with 2 subulate ones; corolla 

 ringent ; 2 short stamens barren, (penny- 

 royal.) 



Cuni'la. Calyx cylindrical, lO-striate, 

 5-toothed ; corolla ringent, with the upper 

 lip erect, flat, and emarginate; 2 barren 

 stamens, the 2 fertile ones with the style 

 exserted; stigmas divided, (dittany.) On 

 account of their barren stamens, this and 

 the preceding genus have been classed un 

 der Diandria. 



Nepe'ta. Calyx dry, striate; corolla with 

 a longish tube ; under lip with the middle 

 division crenate ; throat with a reflexed 

 margin; stamens approximate, (catmint.) 



La'mium. Upper lip of the corolla vault- 

 ed, entire ; lower lip 2-lobed, toothed on 

 each side. 



Sta'chys. Calyx with its divisions awn- 

 ed ; corolla with the upper lip vaulted, the 

 lower lip 3-lobed ; the middle division 

 largest, emarginate ; the lateral divisions 

 reflexed; stamens reflexed towards the 

 sides after discharging the pollen, (wound- 

 wort, hedge-nettle.) 



Leonu'kl-s. Calyx .5-angled, 5 toothed ; 

 corolla with the upper lip erect, villo.se, flat, 

 entire ; lower lip 3-parted ; middle division 

 undivided; lobes of the anthers parallel, 

 having shining dots, (mother-wort.) 



Verce'na. Calyx wifli one of the teeth 

 truncate ; corolla funnel-form, with a curved 

 tube ; border 5-cleft, nearly equal ; seeds 2 

 or 4, with an extra vanishing tegument ; 

 sometimes 2 stamens arc barren, (vervain.) 



Marru'bium. Calyx salver-form, rigid, 

 marked with 10 lines; corolla with the up- 

 per hp cleft, linear, straight, fhorehound.) 



Glecho'ma. Calyx 5-cleft; corolladouble i 

 the length of the calyx ; upper lip 2cleft ; ! 



lower lip 3-cleft, with middle segment 

 emarginate ; each pair of anthei-s approach 

 ing HO as to exhibit the form of a cross 

 (ground-ivy, gill-overground ) 



rycvAN'THEMUM. Involucrum bract-likc, 

 many-leaved, under small heads of flowers j 

 calyx tubular, striate ; corolla with the up- 

 per lip sub-entire ; lower lip 3-cleft; middle 

 segment longer; stamens distant, nearly 

 equal ; cells of the anthers parallel, (moun- 

 tain mint.) 



Aju'ga. Upper lip of corolla very small, 

 2-toothed; stamens longer than the upper 

 lip ; anthers reniform. /?. 



Ballo'ta. Calyx 5-toothed, salver-form, 

 10-striate; upper lip of the corolla crenate, 

 concave ; seed ovate, 3-sided, (false mo- 

 ther-wort.) Ex. 



Hysso'pus. Lower lip of the corolla 3- 

 petalled ; middle lobe sub-crenate ; stamens 

 straight and distant, (hyssop.) 



Galeop"sis. Calyx 5 cleft, aweed ; up- 

 per lip of the corolla vaulted, sub-crenate ; 

 lower lip with 3 unequal lobes, having 2 

 teeth on its upper side, (flowering nettle.) 



Hyp^'tis. Calyx 5-toothed ; corolla 2- 

 lipped, the upper one 2-lobed, lower one 3- 

 lobed, with the middle lobe calyx-like ; 

 stamens inserted in the large part of the 

 tube and declined. S. 



Leu'cas. Calyx tubular, striate, 6 to 10- 

 toothed ; upper lip entire, lower lip long, 

 3-lobed; middle segment largest; anthers 

 beardless, spreading; stigma 2-cleft, short- 

 er than the upper lip. S. 



Synax'^dra. Calyx 4-cleft ; segments un- 

 equal subulate, inchned ; upper lip of the 

 corolla entire, vaulted, lower lip with 3 un- 

 equal lobes ; throat inflated, naked ; fila- 

 ments downy. (S^. 



Lavandu'la. Calyx ovate, sub-dentate; 

 bracted ; corolla resupinate ; stamens in the 

 tube, (lavender.) Ex. 



Sature'ja. Calyx tubular, striate ; co- 

 rolla with divisions nearly equal; stamens 

 distant, (savory.) Ex. 



MoLUCCEL^LA. CaljTX bell-form, mucls 

 larger than the corolla, spinose. (shell 

 flower.) Ex. 



B. Calyx 2-lipped. 



Origa'num. Calyxes collected into a 4 

 sided, strobile-like cone, with broad inter- 

 vening bracts ; corolla with the upper lip 

 erect, flat, straight, emarginate, under lip 

 3-parted, divisions nearly equal, (marjo- 

 ram.) 



Prunet/'la. Calyx with the upper lip 

 dilated ; filaments 2-forked, with an anther 

 on one of the points ; stigma 2-cleft. (self- 

 heal or heal-all.) 



Scutella'ria. Calyx with an entire 

 mouth, which is closed with a helmet-form 

 lid after the corolla falls out ; tube of the 

 corolla bent, (scull-cap.) 



Tri'choste'ma. Calyx resupinate ; corol- 

 la with the upper lip falcate, the under lip 

 3-parted, with the middle" division small, 

 oblong; filaments very long, exsert, incurv- 

 ed or coiled, (blue-curls.) 



Cmnipo dium. Involucre of many,linear 



