OTOSTEGIA ARABICA, Nob.
OTOSTEGIA, Benth. p r Confer supra, p. 1 17.
OTOSTEGIA ARABICA, Nob.
Fruticosa, inermis. Ramis novellisincano-lanulosis. Foliis parvulis (plerisque 1/4-1/2-pollicaribus),
longiuscule petiolatis, crenatis v. crenato-dentatis (basi cuneata integerrimis), rugosis, venosis, supra
puberulis subcanescentibus, subtus incano-velutinis; inferioribus flabelliformibus v. rhombeo-obo-
vatis v. suborbicularibus; reliquis ovatisv. rhombeo-ovatis, obtusis v. acutiuscuiis. Cymis 3-7-floris,
breve pedunculatis, contractis, remotis. Bracteis parvulis (calycis tubo duplo plusve brevioribus),
herbaceis, subulato-filiformibus, ciliolatis. Calycis labio superiore brevissimo, lato-deltoideo, profunde
tridentato; labio inferiore ovato v. obovato-orbiculari v. subquadrato, modo integerrimo modo ere-
nato-v. dentato-lobulato, corollam subæquante.
Frutex ramosus, partibus herbaceis villis brevibus simplicibus articulatis mollibus basi incrassatis velutinus simulque glan-*
du lis minimis (oculönudo inconspicuis, plus minusve sub indumento latentibus) copiosis stipitulatis conspersus. Rami vetuli
leretes v. obsolete tetragoni, nodulosi, stricti, aphylli, corticati, dem um glabrati, graciles (quales subsunt ad summum calami
anserini crassitie), virgati; cortice stramineo v. pallide fusco, demum crassiusculo rimoso. Ramuli novelli decussatim oppo-
siti, tetragoni, stricti, graciles, alii steriles abbreviati foliosi simplices, alii florigeni plus minusve elongati (i/3-i-pedales, ra-
rius 2-3-polIicares) patentes remote foliati : macriores simplices, vegetiores ad axillas foliorum inferiorum ramillulos steriles
(forsan demum florigenos) agentes. Folia crassiuscula, herbacea, sub tomento dense glandulosa, subtus reticulata, basi ple-
rumque truncata v. cuneata (interdum rotundata) ; floralia conformia at gradatim minora, obtusa v. acuta, summa minima(1-2
tineas longa). Folia inferiora ramulorum vegetiorum interdum petiolo haud adjecto 9 lineas longa, atplerumque vix semi-pol*
licaria imoque breviora. Petiolus gracilis, semi-teres, incano-velutinus, lamina nunc subæquilongus, nunc brevior. Flores
spectabiles, attamen minores quam speciebus affinibus, cymosi, brevissime pedicellati, centrales ebracteati, laterales bi-v. tri-
bracteati, in quavis cyma subfastigiati. Cymæ breve pedunculatæ, folia floralia sæpissime superantes, bifidæ v. iteratim dichotomie,
ex axillis foliorum superiorum ortæ, quovis ramulo inflorescentiaminterruptespicatam quasi verticillatam plus minusve
elongatam sistentes. Pedicelli crassiusculi, cum calyce continui, basi articulati (in sicco facillime soluti), simulac cymæpedun-
culus et rhachis incano-velutini. Bracteæ rigidulæ, erectæ, subdivergentes, uninerviæ, subvelutinæ, muticæ, brevissimæ ( ple-
rumque vix 1 lineam longæ). Calyx 6 1/2-7 */a lineas longus. Tubus herbaceus, limbo subæquilongus, obconicus, plicato-
decemcostatus, extus undique incano-villosulus et sub indumento glanduloso-punctatus, intus ad costas dense villosulus, fauce
circumbarbulatus, cætero glabellus et nonnisi glandulis parois conspersus. Limbus bipartitus (nec tarnen ad basin usque sicut
in Otostegia Moluccoide et Otostegia Benthamiana), subringeus, scarioso-membranaceus,semi-pellucidus (in sicco pallide brun-
neus v. fuscus), reticulatus, remote ciliolatus, glandulis parcis conspersus, nervis et venïs dense villosulus; Segmentum supe-
rius triplo plusve brevius segmento inferiore, acute v. obtuse tridentatum : dentibus æqualibns sæpiusve inæqualibus, latera-
libus minoribus v. interdum obsoletis. Segmetitum inferius 3-4 lineas latum, subdeflexo-patens, convexum, septemnervium
(totidemque-dentatum nisi dentes ex parte obsoleti), æquilaterum v. inæquilaterum, sæpe ad basin angulato-dentatum; dentes
v. lobuli nunc mutici, nunc nervo excurrente mucronulati. Corolla alba, 7-8 lineas longa, ringens, glandulis punctiformibus
conspersa. Tubus calycinam faucem subæquans, obconicus, 1 i-nervius, extus glaber, intus supra medium annulo obliquo car-
noso interrupto (sub labio superiori) setulis brevibus obtusis exarticulatis barbatulo auctus, fauce egibbosus. Labia exserta,
subæquilonga, dissimilia. Labium superius erectum, cucullatum, falcato-oblongum, compressiusculum, emarginatum, extus
per totam superficiem intusque secus margines villis elongatis (sub lente noduloso-articulatis) rigidulis confertis hirsutissimum,
apice quasi penicillato-barbatum. Labium inferius subdeclinatum, cuneato-obovatum, trilobum, conduplicatum v. marginibus
reflexum, reticulato-venulosum, siibtus puberulum, supra ante stamina callis duobus longitudinalibus. costæformibus glandu-
loso-hirtellis instruction, reliquo glabrum ; lobi breves : laterales rotundati, oblique retusi, medio obeordato subtriplo brevio-
res. Stamina corollæ fauci inserta, didynama, parallela, sub labio superiore ascendentia, apice decurva, demnm plus minusve
emersa. Filamenta decurrentia, subulato-filiformia : 2 inferiora longiora, labium subæquantia, basi papillosa; 2 superiora
paulo breviora, a basi ad x/3 papillosa. Antheræ minutæ, verticales, glabræ, reniformi-didymæ. Nectariom carnosum, eu- IV. 16