U.S. 119

1/4 poncirus, 1/4 grapefruit, and 1/2 orange

[(C. paradisi `Duncan' × C. trifoliata `Gotha Road') × C. sinensis `Succory'][2] .
 
sweet with trace poncirus bitterness

supposedly hardy to 10°F, young trees injured in low 20s [1]


Gotha Road is a vigorous selection of P. trifoliata that is moderately susceptible to Phytophora [3]

Succory is an acidless orange popular in Egypt [4]

Developed specifically for virus and cold resistance, US119 originated from a cross of T9R80, an F₁ selection of Citrus paradisi cv. Duncan X Poncirus trifoliata, and C. sinensis cv. Succory. Trees are moderately vigorous with dense, dark-green foliage of predominantly unifoliate leaves which are highly resistant to freeze injury. Fruits are sweet orange-like, globose, 70 mm in diameter, weigh 165 g and have a 3 mm thick rind. Flesh is fine textured and firm. At maturity in late November juice samples have soluble solids concentrations ranging from 12.0 to 17.2% and titratable acidity from 0.63 to 0.81%. Fruit flavour is similar to sweet orange but does not match it in overall quality. US119 has survived estimated winter temperatures of -12.2°C. It is highly resistant to citrus tristeza closterovirus and can transmit resistance to progeny in crosses with both resistant and susceptible clones.[5]

Fruit have tendency to split when near ripe and excess rainfall.

Banana Mango taste? [6]
At the November 2017 Southeastern Citrus Expo there was a brief discussion about the taste of US119.  US119 has a unique taste, and a well known collector of hardy citrus said it was his favorite.  It has complex flavors, including mango. 

Glen Citrangedin

1/4 Poncirus, 1/4 orange, and 1/2 calamondin

has no Poncirus bitterness
hardy to 10°F [1] p. 22

Cross made by Dr. Swingle in 1909 in Glen St. Mary, Fl.

He writes "The calamondin has been utilized in a number of hybrids, the most promising of them being one in which it was pollinated with pollen of the Willits citrange.  This citrange, which has been previously described, is itself a hybrid, resulting from pollinating the Japanese trifoliate orange (poncirus trifoliata) with pollen of the common sweet orange (Citrus sinensis).  The citranges are as a class the hardiest of all evergreen citrus varieties or hybrids, but the fruit usually retains an objectionable quantity of musky oil, derived from the trifoliate parent, that necessitates special precaution in using the rather acid fruits for "ade" or preserves.  Most of the hybrids in which the citranges has been utilized have traces of this flavor-- much reduced, however, as in the Thomasville citrangequat, a hybrid of the oval kumquat (fortunella margarita) and the Willits citrange.  By hybridizing the Willits citrange with the calamondin, however, a fruit has been produced that is fully as hardy as the citrange parent but entirely free from the pungent oil usually associated with hybrids of trifoliate orange ancestry.  The tree, however, so closely resembles the common calamondin that some doubt might be raised as to the hybrid nature of the plant but for the occurrence of trifoliate leaves, especially in the juvenile stages" [2] p. 24

Glen citrangedin has the sour of Calamondin that has been kicked up a notch but lacks the pleasant scent and sweet peel. It is a pretty fruit though as they get a very deep orange bordering on red. (citrus.forumup.org)

My Notes: Compared to Thomasville, it is much less hardy and slower growing. Taste is more sour and less pleasant than Calamondin, no poncirus flavors.

Plants may not come true from seed.  Unique notches on several leaves in left picture. Both photographs are taken from the same plant.  Plants are slow growing.

MIC

1/4 grapefruit, 1/4 tangerine, 1/4 Ichangensis, 1/8 Temple orange (sweet orange x mandarin), and 1/8 Poncirus 

Small, and fairly seedy, but with excellent mandarin flavor. Flavor is good.[3]

A complex hybrid probably  by Dr. Brown.  The name is taken from the crossing label
Minneola(aka Honeybell) x C. Ichangensis x CiTemple Edible

So the crossing order would be:
(Duncan grapefruit x Dancy tangerine) x (Ichang papeda x (Poncirus x Temple tangerine))[1]

(C. paradisi 'Duncan' x C. reticulata 'Dancy') 'Minneola' x (C. ichangensis x (C. trifoliata x (C. reticulata x C. sinensis 'Temple') 'CiTemple Edible'))

Minneola is a hybrid of Duncan grapefruit and Dancy tangerine produced in Florida by the U.S. Department of Agriculture and named and released in 1931 [2]

Thomasville Citrangequat

1/2 Kumquat, 1/4 Poncirus, and 1/4 Orange

Has minimal Poncirus bitterness
can survive 5°F, -15°C

 
When the fruit in the second picture was picked. it was about 8 months old at the time.  The fruit was seedless.  It has a very agreeable taste. High acid, brix is 9.8

When fully ripened at about 10 months, the fruit tastes very much like a kumquat, the skin and pulp are sweet, brix of 13.4.  Slightly tart, with kumquat aftertaste.

It is an Oval kumquat and Willitscitrange hybrid (Citrus japonica . 'Nagami' x (Citrus trifoliata x Citrus sinensis  'Ruby')

It was an early breeding attempt to develop a cold-hardy variety. It first fruited in Thomasville, Ga., and is a prolific bearer of kumquat-orange-flavored fruit. Established trees may grow to 15 feet in height and can survive temperatures as low as 5 degrees.[1]

It becomes edible when fully mature, though it is relatively seedy. It is very juicy, valued for eating fresh.  Most people commented that it is a poor lime substitute, but the best one for a cold climate.

The cross was made in 1909, and the variety was named and described in 1923. Fruit medium-small, globose to oval; colour yellow to orange-yellow.

The tree is very vigorous, upright and thorny. Leaves are variable but mainly trifoliate. Presumably because of the larger size and edibility of the fruit, it is much the most popular citrangequat variety.[2]

I have two trees labeled Thomasville.  The grafted one is not trifoliate or thorny, nor is it very seedy.  The flavor is very similar to kumquats.  I have another plant grown from seed that has mixed foliage type.  It seems to have a similar flavor.  They came from Stan McKenzie[3]  Thomasville have some zygotic seed and will cross pollinate, so unless the plants are clones of the original cross they may not be the same as the originally described tree.  Trifoliate leaves and thorns often occur on seedlings and during growth spurts of Poncirus hybrids, which then revert to thornless or reduced thorns and unifoliate leaves when the plants grow more slowly and/or mature.  

Sinton is an Oval kumquat and Rusk citrange hybrid first fruited at Sinton, Texas, and was named and described in 1923. It is an attractive ornamental and the fruit is beautifully coloured but highly acid.
 
Fruit is small, round to oval; often necked; colour deep reddish orange; sharply acid; nearly seedless.  Tree moderately vigorous, upright, nearly thornless; leaves mainly unifolilate. [2]

Willits citrange is a result of crossing Trifoliate orange (Poncirus trifoliata) with a 'Ruby' sweet orange (Citrus sinensis cv. 'Ruby'). The cross was made by W.T. Swingle at the USDA in 1913. (actually this cross was made before 1899 [4])

9/24/2015
Thomasville is the most viewed variety on this blog.   Let me know what your plant looks like.

Summer flowers

Prolific flower buds, small thorns, unifoliate leaf

Seedling with variable leaf type