1. HEDYOTIS. Lam.—Ach. Rich.
(Hedyotis et Oldenlandia auct.—Houstoniæ Sp. ovar. infero. Mich.—Dunalia. Spreng.
non Kunth. Anotis. DC.)
Calycis limbus 4-dentatus aut 4-partitus persistens. Corolla tubulosa, brevis aut longior;
limbo 4-fido subpatente ; fauce sæpius barbata. Stamina 4 inclusa aut vix exserta, antheris
ovatis brevibus. Stylus simplex longitudine staminum aut paulo brevior. Stigma bilobum
aut bipartitum. Capsula globoso-didyma, aut ovoideo-oblonga, calycis dentibus coronata,
bilocularis, loculis polyspermis, apice transversim incomplete loculicido-bivalvis ; seminibus
minimis numerosis aut paucioribus subpolyedris scrobiculatis.—Herbæ ramosoe aut basi
suffrutescentes, foliis oppositis vagina stipidari sæpius dissecta connatis ; floribus parvulis
axillaribus solitariis binis aut pluribus terminalibusque. Ach. Rich.
1. H. coerulea; caulibus erectis subdichotomis foliis ovato-lanceolatis basi attenuatis
radicalibus spathulatis pauce hirsutis, pedunculis elongatis unifloris, corollis hypocrateri-
formibus lobis acutis.—a. caulibus elongatis dichotomis. Houstonia cærulea. Linn. Sp. PI.
p. 152. Pursh, Fl. Am. v. 1. p. 106. Sims, Bot. Mag. t. 370. Elliott, Carol, v. 1. p. 192.
Torrey, Fl. o f Un. St. v. 1. p. 172. Bigel. Fl. Bost. ed. 2. p. 53.—Houstonia Linnæi, «.
Mich. Am. v. 1. p. 84.—13. caulibus brevissimis pedunculis elongatis solitariis cæspitoso-
divaricatis. Houstonia cærulea. /3. minor. Pursh, Fl. Am. v. 1 .p . 106.—H. Linnæi. (3. Mich.
Am. v. \ .p. 85.—H. patens. Elliott, Carol, v. 1. p . 191.—H. serpyllifolia. Mich. Am. v.
1. p. 85. Pursh, Fl. Am. v. 1. p. 106. Elliott, Carol, v. 1. p. 198. Graham, in Bot. Mag.
t. 2822.
Hab. ce. About Quebec. Mrs. Percival.—fi. Fort William, on Lake Superior. Dr. Richardson. Drummond.—
Of this certainly variable little plant, I have received only a solitary specimen of the var. a. from
Canada, and three or four of the var. &. from Fort William, in lat. 48°, which may perhaps be considered
its Northern boundary. - This latter does not appear to me to differ specifically from the more usual appearance
of the H. coerulea, although many Botanists keep them distinct.
2. H. longifolia ; caule erecto ramoso tetragono ad geniculas præcipue pubescente, foliis
lineari-oblongis radicalibus inferne attenuatis, stipulis lato-ovatis integris vel bi-tridentatis
membranaceis albis, corollis infundibuliformibus.—Houstonia longifolia. Goertn. de Fruct.
v. l .p. 2266. t. 49. f . 8. (quoad fruct.) Willd. Sp. PI. p. 583. Bigel. FI. Bost. ed. 2. p. 53.
Elliott, Carol, v. 1. p . 192. Torrey, FI. o f Un. St. v. 1. p . 173. Hook, in Bot Mag. t. 3099.
—Houstonia angustifolia. Mich. Am. v. 1. p. 85. Pursh, FI. Am. v. 1. p. 106.
Hab. Lake Huron. Dr. Todd. Abundant about Lake Winipeg and the Saskatchawan. Dr. Richardson.
Drummond. Douglas.
3. H. ciliolata; 4‘ foliis radicalibus ovatis obtusis basi attenuatis marginibus ciliatis
caulinis ovato-spathulatis sessilibus, floribus corymbosis terminalibus pedicellatis, pedunculis
trichotomis, segmentis calycinis lineari-lanceolatis, caule glabro superne ramoso.” Houstonia
ciliolata. Torrey, FI. o f Un. St. v. 1. p . 174.
Hab. Goat Island, Falls of Niagara. Prof. Hadley, (in Torrey.)—With this I am unacquainted.—What
particular species of Houstonia, of Michaux, Jussieu may have had in view when, in the 10th volume of the
Annales du Muséum, he referred the Genus to Gentianeoe, I have no means of determining : but certain it
is, that all those which I have had the opportunity of examining are referable to the Rubiaceoe, and I think
to Anotis of De Candolle, in which Genus that author has indeed placed the Houstonia rotundifolia of Elliott.
But Anotis is probably not distinct from Hedyotis, with which Houstonia seems to me entirely to agree, and
I have no hesitation in uniting them, especially as I find that such an union has the sanction of Auguste de
St. Hilaire, who says of Hedyotis, “ ce genre pavoit devoir être réuni non-seulement aux Houstonia, mais
encore aux Oldenlandia.” Hence I have adopted the character of Hedyotis, as given by Achille Richard,
in his valuable “ Mémoire sur la Famille des Rubiacées.”
Trib. II. G u e t t a r d a c e æ . Fructus drupaceus, pyrenis 2-5 monospermis. Semina teretia
elongata sæpius erecta. Albumen carnosum. Frutices aut Arbusculoe. Folia opposita
aut rarius terna, cumstipulis interpetiolaribus. DC.
2. MITCHELLA. Lirai.
Calycis tubus ovato-globosus (interdum cum flore altero concretus,) limbus maximus
4-dentatus. Corolla infundibuliformis, tubo terèti, fauce lobisque patentibus intus hirtis.
Staminum filamenta tubo adnata fere usque ad faucem, antheræ ovatæ vix exsertæ. Stylus
filiformis. Stigmata 4 inclusa. Bacca subglobosa, calycis dentibus coronata 4-pyrena, (aut
8-pyrena, ubi baccæ duæ coalescunt;) pyrenoe corneæ 1-spermæ. Albumen subcartila-
gineum. Embryo minutus erectus cotyledonibus brevissimis.—Herbæ Americana glabroe
repentes Linnææ aut Nerteriæ facie. Folia subrotunda aut ovata. Stipulæ utrinque soli-
tariæ minima. Flores axillares aut terminales, nunc gemini et concreti ad apicem pediculi,
nunc solitarii sessiles. DC.
ï. M. repens ; foliis subrotundis, floribus ad apicem pedunculi duobus ovario concretis.
DC.—Linn. Sp. PI. p. 452. Mich. Am. v. 1. p. 86. Pursh, Fl. Am. v. 1. p. 101. Elliott,
Carol, v.. 1. p. 198. Bigel. Fl. Bost. ed. 2. p . 52. Torrey, Fl. o f Un. St. v. 1. p. 174. De
Cand. Prodr. v. 4. p. 452.
Hab; Upper Canada. Pursh. Dr. Todd. Mrs. Percival. Mrs. Sheppard.—This seems to be altogether
confined to the Southern limite of the British Possessions, and to be unknown on the West side.
Trib. III. S p e r m a c o c eæ . Cham, et Schlecht.—Stigma bilamellatum. Fructus siccus
aut parce carnosus constans mericarpiis sæpius 2, rarius 3-4, monospermis nunc concretis
nunc secedentibus indehiscentibus nunc varie dehiscentibus. Albumen carnoso-subcorneum.
Frutices aut Herbæ. Folia opposita. Stipulæ basimembranaceoe apice sæpius multisetoe. DC.
3. CEPHALANTHUS. Linn.
Calycis tubus obverse pyramidatus, limbus angulatus 4-dentatus. Cor. tubulosa gracilis
limbo 4-fido, lobis erectiusculis. Siam. 4 brevia summo tubo inserta vix exserta. Stylus
longe exsertus. Stigma capitatum. Fructus inverse pyramidatus coronatus coriaceus 2
(-4?) locul. 2 (-4 ?) partibilis, loculis 1-spermis indehiscentibus interdum abortu vacuis.
Sem. oblonga epiphysi callosa supra terminata. Embryo inversus in albumine subcartila-
gineo, rad. supera.—Frutices. Rami teretes. Folia opposita aut terna. Stipulæ breves
distinctoe aut subconcretæ. Pedunculi ex axillis supremis et apice ramorum orti nudi. Cap-
itulum globosum. Flores supra receptaculum sphoericum piligerum sessiles, dense aggregati,
sed distincti, ochroleuci. DC.